The 4G /5G Xtream has two SIM card slots which can be manually switched between, or you can use the automatic SIM switch feature to automatically switch between them. When the automatic SIM switching feature is enabled, the 4G/5G Xtream will monitor the current SIM network and if a certain condition occurs, it will switch to using the other SIM network as detailed below.

The SIM Switch section provides you with the possibility to configure SIM switching rules, i.e., set up circumstances under which the device will perform a switch from using one SIM card to another. Refer to the figure and table below for information.

When configuring SIM switching from the Secondary card, an additional field called “Switch back to primary SIM card after timeout” becomes available:

If you have a very low internet speed (less than 5m/sec) then several factors can interfere with your internet speed.

When a device is connected to one of our wireless 4G routers, the router has to “route” the data, which takes time. The typical 2.4GHz speed of 50Mbps is shared across all devices on the wireless network: more devices, less speed

It is not uncommon for other 2.4GHz wireless networks to be present on a modern boat; MFD, Charger/Inverter, AIS, etc. Each network, will potentially cause interference and slower speeds

To get a better speed, the best solution is to connect your laptop via Ethernet. With the 4G Connect Pro, you can get internet up to 60m/s via Ethernet but via WiFi, a good connection would be 25-35Mbps.

1. The first step is to check all your installation. Make sure there is no interference with your device’s 4G antennae (a nearby radar, for example). Antenna height is not as critical as VHF and better to mount lower and not increase antenna cable length. If installation demands longer cables we can supply 10m or 20m LMR400 cable assemblies. Don’t extend the standard 7m LMR200 cables.
2. Then, you should run a speed test on a wired device. Connect a device to the LAN socket of the 4GConnect via a network cable – this gives maximum speed and then do a speed test.
3. Another action is is to do a Wi-Fi Survey to see if you are getting interference and congestion. An external Wi-Fi network might interfer with your 4G router network and affect your internet speed. You can do a Wi-Fi survey test with the following article.

The Bluetooth connector that is not currently used for any marine applications is a Reverse Polarity SMA connector and should be identical to the two Wi-Fi antenna connectors.

The GPS antenna is a standard SMA connector and the supplied GPS antenna should plug straight in with no additional adaptors required.

Below is an image showing the 4GXtream connectors, that you can use to check against your unit.

You will need a StarLink Ethernet Adaptor, like the one below:

https://www.starlinkhardware.com/starlink-ethernet-adapter-setup-and-review/

Then using a normal network cable, you need to plug the Ethernet Adaptor in to the WAN socket of your 4GXtream and set the Wired WAN as the highest priority WAN connection. You can use the Failover feature of the 4GXtream to make it switch to Mobile (4G) when Starlink is not connected to the internet.

Finally and most importantly, you need to Enable Bypass Mode in the Starlink.

1. Open up the Starlink app
2. Tap Settings
3. Swipe down and tap Bypass Mode
4. Slide the toggle to the right
5. When prompted, confirm you want to continue by tapping OK

Even though the Starlink router is now in bypass mode, you can still access most of the dish settings from either the app, or the Starlink web interface. You’ll need to be on a device that is connected to your 4GXtream. If you aren’t familiar with the web interface, it can be accessed from a web browser by visiting:

http://dishy.starlink.com

or

http://192.168.100.1

When you scan for wireless networks on whatever mobile device you are using, can you see the 4GXtream wireless network?

If you can, please connect to it using the default wireless password = 4GXtream

Once you are wirelessly connected to the 4GXtream, then please open your web browser in a Private/Incognito window (important so that it does a fresh load of the 4GXtream web interface) and then try to go to http://192.168.1.1 or http://4gxtream

Whichever, address you use, it is very important that you include the http:// as this tells your browser that you want to go to a specific address and not do a Google search on 192.168.1.1 or 4gxtream

This must work as it is a core feature of the 4GXtream and will have been tested during production.

Assuming that you can now bring up the 4GXtream web interface, we need to check the main STATUS>OVERVIEW page.

Most of the time 4GXtream will connect to the SIM operators APN settings automatically, but some networks we still have to manually enter the APN settings. To find your SIM’s correct settings, please check out this website: https://www.apnsettings.org/ The 4GXtream runs on Linux, which uses Android underpinnings, so make sure that the APN settings are for Android use.

Please also note that the PDP type should always be set to IPv4 only and when Googling the APN settings, ignore the older MMS and WAP settings, it needs to be the LTE/4G settings.

In general, unless indicated differently by the MFD manufacturer (Navico/Garmin/Raymarine/Furuno), it is best to leave the manufacturer’s wired Ethernet network, just for connecting the manufacturer’s equipment together and if you want to provide the system with an internet connection, to do this by connecting the master MFD wirelessly to our 4GXtream.

This will result in having two wired Ethernet networks on the boat, one for the navigation equipment and the other for internet access and normal IT type networking, but it will result in the most reliable operation of the two networks.

Most MFD manufacturers do not want customers to open up their Ethernet network to either a conventional LAN or WAN environment that they have no control over. Unknown network devices, levels of network data and protocols, that the manufacturer has never tested against, could potentially have serious, negative effects on the operation of their equipment.

The MFD’s wireless interface will be on a separate subnet and “locked down” so that it just does what they need it to do and no more. When you tell the wireless interface to join another wireless network in STATION (STA) mode, rather than its default ACCESS POINT (AP) mode, it will get an IP Address for the wireless interface from the 4GXtream and be able to go online for updates, weather data, etc.

You will basically be plugging the Star Link in to the WAN socket of the 4GXtream and then using the web interface to switch between the wired WAN interface (Star Link) and the 4G Mobile interface.

There is a “Failover” mode in the 4GXtream where you can tell it to use the Wired WAN by default and then switch to mobile if there is no internet connection on the wired WAN interface (Star Link).

This article online tells you how to bypass the Star Link router and will be applicable for our 4GXtream…

https://www.starlinkhardware.com/how-to-bypass-the-starlink-router

Although the approach you are taking with DDNS and Port Forwarding would work well on a conventional land based network, that is connected to the internet via a Cable/ADSL router, there are several reasons why they may not work on a mobile network:

1. NAT (Network Address Translation): Mobile networks, especially those using IPv4, typically employ NAT to conserve IP addresses. NAT allows multiple devices to share a single public IP address. When you connect a device to a mobile network, it is assigned a private IP address that is not directly accessible from the internet. This makes it challenging for DDNS and port forwarding to function properly, as the mobile network’s NAT may not forward incoming connections to your device.
2. Carrier-Level Restrictions: Mobile network providers often impose restrictions on certain network activities for security or network management purposes. These restrictions can include blocking or limiting incoming connections to devices on their network. As a result, even if you set up DDNS and port forwarding correctly on your mobile device, the carrier may still prevent external access to it.
3. Firewall and Security Policies: Mobile networks commonly implement firewalls and security policies to protect devices on their networks from potential threats. These security measures may include blocking certain ports or protocols by default, which can interfere with port forwarding. Additionally, some carriers may employ strict security policies that prevent the modification of network settings necessary for DDNS or port forwarding to work properly.
4. Dynamic IP Addresses: Mobile networks typically assign dynamic IP addresses to devices. This means that the public IP address assigned to your device can change periodically or when you reconnect to the network. DDNS relies on associating a domain name with your IP address, so if your IP address changes frequently, the DDNS service may not be able to keep up and point to the correct IP address for remote access.

It’s worth noting that some mobile network providers may offer specific plans or services that allow for more open network access or even static IP addresses, which can facilitate DDNS and port forwarding. However, these options may come with additional costs and may not be available on all networks or in all regions.

Overall, the combination of NAT, carrier restrictions, firewall policies, and dynamic IP addresses on mobile networks can make it challenging for DDNS and port forwarding to function reliably. If you require remote access to devices on a mobile network, you may need to explore alternative solutions such as VPN (Virtual Private Network) or cloud-based services that facilitate remote access without relying on DDNS or port forwarding.

Our 4G products (4GConnect and 4GXtream) provide good internet connectivity over 4G mobile networks and we know that they are used by some of our customers to remotely access their marine systems.

To remotely access the systems on a boat, the normal method is for the equipment on the boat to initiate a secure connection to a cloud server and then you use an App on your mobile device to also access the cloud server. The cloud server then routes you through to your boat’s data, which you can view in almost realtime. This method relies on the equipment manufacturer creating the cloud system and app to make this happen. The best example of this type of system is the Victron VRM system.

The second method is to use a VPN service to create a more generic cloud connection, not specific to one manufacturer, which basically connects your mobile device to the boat’s Ethernet network. Once the VPN connection is established, you can remotely do anything that you would normally do when on the boat.

Setting up a VPN on our 4G Products is possible, but requires networking knowledge and is not something that Digital Yacht is able to provide support on. You would need to find a suitably experienced IT networking engineer.

If you want to explore the VPN solution, I would recommend ZeroTier which can be installed on our 4GXtream and is a free and relatively easy to setup VPN service, that I played with a few years back. OpenVPN is also supported on our 4GXtream.

Since the end of 2022, we have started receiving support requests from new EE customers that cannot get their Digital Yacht 4G Products to work with their EE SIM.

It would appear that recent EE SIMs have a Virgin Mobile profile included, which is seen as the default APN settings when our products are set to Auto APN mode (default). If your SIM is being correctly read, you are getting a good mobile signal strength, the STATE is shown as “Registered (home); EE; 4G (LTE)” but the DATA CONNECTION is shown as Disconnected, then please try the following settings.

Open a browser, go to http://192.168.1.1 and login to the web interface. Now change to ADVANCED mode by clicking on the word BASIC in the top right corner of the web interface. On the menu select NETWORK>INTERFACES and you will see the page below….

Click on the “Pencil” Edit icon for the SIM slot the EE SIM is inserted in – MOB1S2A1 in the example above.

Now you need to set Auto APN to OFF and enter the following details in the boxes that appear. Also make sure that PDP Type is set to IPv4 Only and not IPv4/IPv6 which is the default…

Once all of the settings are correctly entered, scroll to the bottom of the page and click the “SAVE & APPLY” button. Give the unit 20-30 seconds to apply the settings and reboot the modem and then you should see the DATA CONNECTION change to Connected and you will be online.

Many products from leading marine electronics manufacturers now feature a wired and/or wireless network interface. In some larger systems such as those from Navico/Garmin/Raymarine/Furuno, the MFDs, radar scanners, cameras and sonar systems will all be networked together via Ethernet cables. When one of our 4G Products is used as the central wireless router for internet connectivity, some customers have been confused as to whether they can join all of the devices together on one common network.

In general, unless indicated differently by the MFD manufacturer, it is best to leave the manufacturer’s wired Ethernet network, just for connecting the manufacturer’s equipment together and if you want to provide the system with an internet connection, to do this by connecting the master MFD wirelessly to our 4GXtream.

This will result in having two wired Ethernet networks on the boat, one for the navigation equipment and the other for internet access and normal IT type networking, but it will result in the most reliable operation of the two networks.

Most MFD manufacturers do not want customers to open up their Ethernet network to either a conventional LAN or WAN environment that they have no control over. Unknown network devices, levels of network data and protocols, can create interoperability issues that the manufacturer has never tested for, potentially having a serious, negative effect on the operation of their equipment.

The MFD’s wireless interface will be on a separate subnet and “locked down” so that it just does what they need it to do and no more. When you tell the wireless interface to join another wireless network in STATION (STA) mode, rather than its default ACCESS POINT (AP) mode, it will get an IP Address for the wireless interface from the 4GXtream and be able to go online for updates, weather data, etc.

The following power consumption figures are applicable to our 4GXtream.  Power consumption does vary significantly, depending upon the amount of mobile data being transferred and how much wired/wireless network activity is taking place.

Below are the average consumption figures for 12v and 24v systems…

Minimum – Powered up but no mobile or network data transfer = 3.75W

Normal – Powered up with a couple of network devices doing light internet access = 4W

Maximum – Powered up with multiple network devices doing heavy internet access = 10W

https://youtu.be/cUESVgaJQAs

In some situations, our 4G Products can appear to be connected to the internet, but due to other external conditions such as AV Software, ISP issues or local network settings, you cannot access websites from your browser. If this happens, there are some additional tests and checks that can be carried out.

Go to SYSTEM>ADMINITSTRATION>TROUBLESHOOT and do the following tests….

PING TEST

Enter an IP address of 1.1.1.1 and click the PERFORM button. This sends a series of data packets directly to a public website (Cloudflare) which then sends them back to your 4G Product over the Mobile network. The results are shown in the box below and if all of the packets are received, then the connection is good and it might be a DNS issue – continue to the Trace Route Test.

Traceroute Test

Change the method to Traceroute and the address to www.google.com and click the PERFORM button again, you should see the following info in the box that traces, the route through the internet to the Google web server. If the test fails and the Google site is not reached, then you may have a DNS setting issue on your wireless device. Try setting it to use a fixed DNS server address of 8.8.8.8 which is the Google public DNS server.

Check SMS Messages

Sometimes, it can be an issue with your mobile network operator account that is stopping the internet access. Please check if you have received any notification SMS messages from the Mobile Operator that might explain why we are connected but not getting a good internet connection? To do this, go to SERVICES>MOBILE UTILITIES>MESSAGES and you should see any SMS messages that the Mobilke operator have sent you…

Finally, some anti-virus, VPN or network security software has been known to block mobile internet connections, particularly common on business computers. Try temporarily turning off any anti-virus, VPN or network security software and see if that fixes the problem. If it does, make sure that your new 4G Product is in the list of “Safe Networks” in your anti-virus/security software.

Our 4G Products are used globally on lots of different networks and occasionally, due to incorrect APN settings or SIM card issues, a unit will not correctly register on the mobile network and no internet connections will be available.

In this situation, please start by checking the SIM card, as per this article that we published on our blog…

https://digitalyacht.net/2022/08/12/getting-correct-sim-cards-4g-products/

If that does not resolve the situation, then in order to assist you our support team will need the following screen shots and information…

1. A screen shot of the STATUS>OVERVIEW page – first page that you see when you log in to the web interface.
2. A screen shot of the STATUS>NETWORK page which lists all of the mobile network info.
3. The unit’s troubleshooting file, go to SYSTEM>ADMINISTRATION and then go to the Troubleshoot tab. Scroll down the page and click the Troubleshoot File DOWNLOAD button. Send us the GZIP file that it downloads to your device.

One of the lesser known facts about our 4GXtream, is that it has a built-in GPS receiver and is supplied with a passive GPS antenna. This is primarily for position logging or for enabling a geo-fence alarm function. However, this GPS data can also be transmitted out on the NMEA 2000 network.

Assuming that the 4GXtream GPS antenna is connected, it is getting a good position fix and the NMEA 2000 cable is connected to a fully powered up and operational NMEA 2000 network, the notes below will configure the 4GXtream to become an NMEA 2000 GPS position source.

From a device that is wirelessly connected to the 4GXtream, open a browser and bring up the web interface at http://192.168.1.1, and then login to the 4GXtream web interface. If the 4GXtream is in BASIC mode, click on the word BASIC and you will be asked if you want to go in to ADVANCED mode, confirm that you do. Now go to SERVICES>GPS>GENERAL and make sure the GPS is enabled…

Now go to the SERVICES>GPS>MAP and make sure that your current position is being shown correctly on the map…

Now we need to send the GPS data to the USB port which is connected to the 4GXtream’s NMEA 2000 gateway. This is done by creating an internal “loopback” TCP connection and then sending the output to the USB port as a Serial data stream.

First go to SERVICES>GPS>NMEA and configure the NMEA Forwarding settings as shown…

Scroll further down and in the NMEA Sentences Settings, turn on the GPGGA and GPRMC sentences with an interval of 1sec…

Click SAVE & APPLY and then move on to the SERVICES>USB TOOLS>USB TO SERIAL settings and set them as follows, noting that the ID has already been automatically set and will be different to the value below (DO NOT CHANGE IT)…

Click the SAVE & APPLY button and now your GPS data will be sent to the NMEA 2000 gateway and on to the NMEA 2000 network. If you have other GPS Position sources on the NMEA 2000 network you will need to make sure that you select the 4GXtream as the preferred position source when you wish to use it – it will appear on the NMEA 2000 as a Digital Yacht N2Net NMEA2000 Serial Gateway.

With the unit fully powered up i.e. connect power and wait >1 minute for it to boot up, using the supplied SIM removal clip or some other blunt pointed object, gently press and hold the small Reset Switch on the front face of the unit, for at least 5 seconds as detailed below for the Factory Reset function….

The reset button has two functions:

• Reboot the device. If the reset button is pressed for up to 4 seconds, the device will reboot. Start of the reboot will be indicated by the flashing of all 5 signal strength LEDs together with the green connection status LED.
• Factory reset. If the reset button is pressed for at least 5 seconds (by default), the device will perform a factory reset and reboot. Signal strength LEDs indicate the elapsed time while holding the reset button. When all 5 LEDs light up, it indicates that 5 seconds have passed and the reset button can be released. Start of the factory reset will be indicated by flashing of all 5 signal strength LEDs 5 together with a red connection status LED.

After the unit has been reset, all of the settings will be back to as they were when it left our factory.

The 4GXtream is a powerful device with lots of functionality and unless you are an experienced IT Engineer, then the only configuration changes that we would recommend are…

• Manually set the APN settings if the automatic default settings have not successfully connected the 4GXtream to the internet
• Set the Wireless Network Name and Wireless Password to values of your choosing so that only the people you want to connect to the 4GXtream can connect to it

All of this is covered in our latest User Manual;

The firmware version is normally displayed in the top right hand section of any of the web pages….example below of the original 4G Connect “Black & White” web interface and the latest “Blue & White” web interface…

The 4G Xtream only has a “Blue & White” web interface.

Setting up remote access to any network that is operating on a mobile LTE (3G/4G) network is never easy, even for experienced IT engineers. Unfortunately, Digital Yacht just do not have the resources or depth of knowledge to support our customers in doing this on an individual basis.

When your remote network is “hidden” inside a mobile network that abstracts all external connections to the internet, the only way to create a VPN is for the 4GConnect/4GXtream to initiate a connection to your VPN server or shared cloud server that does the data routing for you.

Our 4GConnect is based on OpenWRT, which supports two different VPN services; OpenVPN and ZeroTier, plus a couple of tunnelling protocols that could be used as an alternative to VPN. If you do not have the services of an experienced IT engineer to help with setting up a solution, then I would look for examples of connecting to a remote OpenWRT network over LTE using VPN services.

Here is a link to the OpenVPN documentation on the OpenWRT site and it covers using either a Client or Server setup. Hopefully with this information you will be able to find the relevant settings in our 4G products to setup your VPN.

https://openwrt.org/docs/guide-user/services/vpn/openvpn/start

If you have an AT&T Sim Card, then you need to be in “Advanced” Mode, click the word “Basic” in the web page header and then go to Network>Mobile and set the Service Mode to “4G (LTE) Only” and then click the “Save+Apply” button at the bottom of the page….

After the new settings have been applied, go to Network>Interfaces and then click on the “Pencil” Edit button of either MOB1S1A1 (SIM1) or MOB1S2A1 (SIM2) depending upon which SIM slot the AT&T SIM is in….

In the Pop-Up settings window, turn off the Auto APN switch and some new boxes will appear. Select “Custom” from the drop down APN list and then type “Broadband” in the Customer APN box exactly as written with a capital B and then click the “Save+Apply” button at the bottom of the page…

After the settings have been applied, go to Status>Overview and check in the Modem panel that you are connected.

Now try going to another website to check you have internet.

So out of the box our 4GXtream units work in High Speed Gateway Mode and will convert NMEA 2000 data to NMEA 0183, which for users who just want basic navigation data, will be enough. For advanced users that want software such as Expedition to receive all of the NMEA 2000 data in RAW Mode, then you will need to do the following….

Make sure that your 4G Xtream has the latest firmware. When you update your firmware unit, using the System>Firmware menu option, please remember to turn off the “Keep Settings” switch.

1)            With the 4GXtream powered down and disconnected from the NMEA 2000 network, unscrew all of the top screws (from both end caps). Then unscrew the two bottom screws in the Antenna End Cap and gently move this end cap way from the enclosure as far as possible without putting undue tension on the small coax cables inside.

2)            It should now be possible to gently slide out the top of the aluminium enclosure (top face with product label on).

3)            With the top of the enclosure removed, you will see the small gateway PCB which has 4x DIP Switches in the middle. All of the switches except switch 4 will be in the OFF position (default positions).

4)            Using a small screwdriver or any other fine tipped tool, very gently push switches 1, 2 and 3 in to the ON position so that all switches are in the opposite position to the image above.

5)            Re-assemble the 4GXtream, by reversing the steps above and once back together, connect the NMEA 2000 cable to your NMEA 2000 network and turn on the 12/24v Power to the 4GXtream.

6)            After 45-60secs, the 4GXtream wireless network should appear. Connect your wireless device to the 4GXtream wireless network and then open a browser and go to http://4gxtream or http://192.168.1.1

7)            Login to the 4GXtream web interface using Username = admin and Password = 4GXtream and go to Services>USB Tools>USB to Serial

8)            Click on the “Pencil” Icon to edit the USB to Serial settings and then simply change the Baud Rate setting to 230400 and click the SAVE+APPLY button at the bottom of the page.

9)            Now you can go to a terminal program like Tera Term and setup a Telnet (TCP) client connection to the 4GXtream (192.168.1.1) on Port 2000. You should see a TCP connection open and the HeartBeat (Network Status Message) appear every second from the iKonvert…

10)          If you want to see the RAW NMEA 2000 data, then you can initialise the iKonvert by sending the following command, must remember to set the terminal program to send <CR><LF> as the End of Line (EOL) command…

$PDGY,N2NET_INIT,ALL

If you have any issue with your 4G product then It is always worth updating your 4G Product to the latest version. This article, although written about the AT&T update, is still applicable for any unit.

Updating 4G Firmware

Please note that older 4GConnect units must do a two stage update to go from the first “Black and White” web interface version, to the latest “Blue and White” web interface version. The V01.14.05 is a special intermediate version (last of the “Black and White” generation) that must be loaded first, in order to make the jump to the new V07.02.08 firmware.

https://digitalyacht.net/2022/03/04/important-update-4g-products/

Configuring 4G Product

Here is the link to the very useful video on configuring our 4G Products – shows the latest “Blue and White” web interface…

https://digitalyacht.net/2022/03/04/important-update-4g-products/

Getting the correct SIM card

Here is the most recent article on SIM cards. If the customer is getting a good mobile phone signal on the 4G Product and the SIM card is being read, the network operator is recognised, etc. then it could be a SIM issue and this article explains what needs to be checked…

https://digitalyacht.net/2022/08/12/getting-correct-sim-cards-4g-products/

This procedure is good for boats that are regularly going a long way offshore outside of mobile network range, such as fishing boats, blue water yachts, etc. Basically, our 4G Products can sometimes not reconnect properly when they come back in to mobile range and this feature makes the 4G Product keep checking if it is online and if it is not it will reboot the modem.

Ping Reboot Configuration

To enable the “Ping Reboot” feature, go to SERVICES>AUTO REBOOT and you will see a similar page to the one below…

Now click the ADD button and I would suggest you use the same settings as shown below, which are the ones I have used in all of our testing. Every 2 minutes, 4GXtream will ping 8.8.8.8 which is the Google public DNS server and is always online.

If it does not receive a reply within 5 seconds, it retries two more times and if there is still no reply it restarts the 4G Modem.

Click the “SAVE & APPLY” button and after the settings are stored, you should not have to manually reboot the 4GXtream again.

Since COVID forced many of us to start working remotely, we are seeing an ever increasing demand for our 4G Products. Once installed and working, these products are extremely reliable, but with so many mobile network operators around the world, initial setup can be confusing. To help our customers get up and running as quickly as possible, we have created a new video on configuring our 4G Products.

This video is filmed using one of our 4GXtream products, but is equally applicable for our 4GConnect and 4GConnect Pro products, particularly if you have updated to the latest V07.01.02 firmware as detailed in a previous post “Important Update for our 4G Products”. This update adds the same, new “Blue and White” web interface to our 4GConnect, as our 4GXtream has and will be the interface that all future videos and technical documents will be based on.

Our 4GXtream router but also the latest 4G Connect version have a new “Auto-APN” feature that reads the SIM details and selects the correct APN settings for the SIM’s mobile network. APN stands for Access Point Name and are the settings your 4G product needs to pass to the network carrier; AT&T, Vodafone, T-Mobile, etc. in order for the carrier to allocate your 4G product an IP address and connect you to the right secure network.

On many networks the new “Auto-APN” feature works very well, but today we had a Vodafone customer contact us who could not get their 4GXtream to connect correctly. The solution was to manually override the APN settings, by following the procedure below.

1. Go to the 4GXtream/4GConnect’s web interface at http://192.168.1.1 and login
2. By default the 4GXtream or 4G Connect is in “Basic” mode and you need to click on the word Basic in the top right hand section of the web page, to enable “Advanced” mode.

Now go to NETWORK>INTERFACES and click on the Edit button (pencil icon) of the SIM card interface you are using, SIM 1 in the example below.

You can now edit the SIM settings to disable Auto-APN mode and add manual “Custom” APN settings, as shown below which are the correct settings for a Vodafone UK (contract) SIM. Once you have set the manual APN settings click the “Save & Apply” button and once the settings have been changed, go to the STATUS>OVERVIEW page to see if you now have a connection to the internet.

If your network carrier has not given you your APN settings, then this is a pretty good site to try and we would be really grateful if you could let us know if the Auto-APN settings work for you or what manual settings you had to use.

https://www.apnsettings.org/

One of the most common problems, that the Digital Yacht support team help our 4G Product customers with, is SIM card issues. This little piece of plastic, with its integrated memory chip, containing a unique identifier, that allows your data usage to be tracked, causes a disproportionate amount of wasted time and effort, so we decided to publish a guide to avoid the pitfalls that we regular see.

Not all SIMs are created equal and with the majority aimed at mobile phone users, it is important that the SIM you use in our 4G Products meet the following criteria….

1. It is a 4G SIM (not 5G)
2. It is a Data Only SIM – designed for wireless routers and not mobile phones
3. The SIM should not have a PIN number enabled or if it does, that you know what it is
4. The SIM has not reached its Data Limit
5. That the SIM is properly registered and enabled by the network operator
6. If being used Internationally that the SIM has roaming enabled

Once you are confident that your SIM meets all of the above criteria, please insert it in to our 4G Product and using the web interface, go to STATUS>NETWORK where you should see a screen similar to the one below, minus the red annotations….

The key pieces of information to look for on this page are that the SIM Card State shows “Inserted”, which means that it has been read by our 4G Product. Then you should see the IMSI and ICCID numbers, which are stored on the SIM and used by the 4G Product to identify itself to the network operator.

• IMSI = International Mobile Subscriber Identity. This is a unique identifier that defines a subscriber in the wireless world, including the country and mobile network to which the subscriber belongs. It has the format MCC-MNC-MSIN. MCC = Mobile Country Code (e.g. 310 for USA); MNC = Mobile Network Code (e.g. 410 for AT&T), MSIN = sequential serial number. All signaling and messaging in GSM and UMTS networks uses the IMSI as the primary identifier of a subscriber.

• ICCID = Integrated Circuit Card ID. This is the identifier of the actual SIM card itself – i.e. an identifier for the SIM chip. It is possible to change the information contained on a SIM (including the IMSI), but the identify of the SIM itself remains the same.

The IMEI number is unique to the 4G Product’s modem and will always be displayed, even if the SIM is not inserted…

• IMEI is short for International Mobile Equipment Identity and is a unique number given to every single mobile phone, typically found behind the battery. IMEI numbers of cellular phones connected to a GSM network are stored in a database (EIR – Equipment Identity Register) containing all valid mobile phone equipment. When a phone is reported stolen or is not type approved, the number is marked invalid.

Other key information on this page are the Operator and Operator State. The image above was using a SIM from UK operator 3 which was a fully registered, had plenty of Data and had established a data connection.

Assuming that you have followed this guide and selected the right SIM card, then there is one last hurdle to overcome, making sure that our 4G Product is using the right APN settings for the SIM’s network operator. The Access Point Name (APN) settings, vary from network operator to network operator, and with the latest firmware updates, our 4G Products will automatically try and set these from a database of popular APN settings. However, for some networks, it is still necessary to manually enter the APN settings, please see our configuration video for more details.

Once you have everything working, there should be no need to make any further changes to the settings, but occasionally the connection will fail. This can be for a number of reasons, but more often than not, particularly if you are using a Pay As You Go type SIM or you are using International Roaming, it will be a network operator issue and you should check that you have not received an SMS notification from the operator.

To do this, go to the SERVICES>MOBILE UTILITIES>MESSAGES  screen where all of the received SMS messages are displayed…

Make sure there are no “Data Limit” or “Roaming” related messages that might account for your loss of connectivity and if you are still having problems after rebooting the modem, which you can do at the bottom of the STATUS>NETWORK page, please contact your network operator to check the status of your SIM account.

To decide whether to use the Mobile 4G connection or the WL510 long range wireless connection, you will need to go in to the 4GXtream web interface and click on the Network>WAN menu option….which will display the page below.

You can use the switches at the end of each line to select whether you want to connect to the internet via Mobile 4G or via the WL510 Wi-Fi on the wired WAN interface. In the screen shot above, taken from my boat’s 4GXtream, I do not have an WL510 wireless booster connected to the Wired WAN interface, so it does not show any information about it but on your unit, with the WL510 connected, there should always be an 192.168.10.xxx IP address and uptime values.

Just click Save and Apply after making your selection.

If the unit has been working and suddenly stops or you have followed the steps above and everything appears to be OK but you still do not have a connection to the internet, then the fault is likely to be with the SIM or network operator. Could any of the following factors be applicable?

• The SIM is a Pay as You Go type and the credit has expired?
• The SIM is a normal mobile phone SIM and not a Data Only SIM which some network operators insist must be used in wireless router type systems?
• The SIM is a monthly contract SIM but has a data limit that you have exceeded?
• You are using the SIM in another country but the network operator has not enabled roaming?
• The SIM is not properly registered?

The only option in this situation is to contact the network operator, which can be a convoluted exercise, but we have seen this situation many times and if you can get through to the right person and tell them the exact nature of the problem, then it can be resolved.

The best source of APN settings is online at https://apnsettings.org and the best way to search for them is to do a Google search like apnsettings.org UK Vodafone 2022 as the search facility on the website is not great. If the default Auto APN setting on the 4GXtream does not work, manually set the APN settings for your SIM card and save them.

If they are correct, you should see the Data Connection in the STATUS>OVERVIEW page (see above) shown as Connected and in the NETWORK>WAN page, whichever MOB SIM Slot you are using should have an IP address – in the example below MOB1S2A1 has IP address 10.44.45.58/24

We have two models of 4GXtream and with the global world we now live in, we do occasionally get situations where a customer has bought a US unit and tried unsuccessfully to use it in Europe or vice versa. To check what model you have, go to STATUS>SYSTEM and check the device’s Product Code; RUTX11 0***** indicates a European/ROW model and RUTX11 1***** indicates a US model….

Go to STATUS>NETWORK>MOBILE and check that the correct SIM card slot is selected and that the SIM is shown as “Inserted”, the network operator is shown and the Operator State is shown as Registered(Home) or Registered(Roaming) depending upon which country you are in.

If you go to the STATUS>OVERVIEW page, in the Modem panel, there is a signal strength indicator in the top right corner and this should be showing a good signal strength of between -40dBm and -90dBm.

Don’t forget that as these are negative numbers, -40dBm is much better than -90dBm. Once you start getting signal strengths in the -97dBm to -110dBm range, your signal strength is not going to be good enough for a reliable internet connection. If you are seeing poor signal strengths but are in a good signal strength area, then we will need to look at antennas and cabling.