The following article is correct as of 14.08.2025.

How To Change APN Settings in Teltonika Routers

When a 4G/5G router connects to a mobile network, it uses an Access Point Name (APN) to establish a connection to the Internet using the mobile carrier’s network.
More specifically, the APN is the name of the gateway between a GSM, GPRS, 3G, 4G, and 5G mobile network.
On a related note, 3G, 4G, and 5G can also be known collectively as LTE or Long-Term Evolution.
The APN itself is presented to the carrier and determines what type of connection should be used, and what IP address should be assigned to the wireless device.
Mobile networks typically use carrier-grade NAT (Network Address Translation) for IP distribution in order to avoid exhaustion of IP addresses, otherwise, you would greatly limit the number of users that can connect to a mobile network.
Unfortunately, this makes port forwarding impossible, so often a VPN service is used instead.
In layman terms, when you insert a data SIM card into the router and power it up, it will attempt to connect to the mobile network, and if the APN supplied is valid, you will be granted Internet access.
All current Teltonika routers have a function called Auto-APN which is enabled by default, is designed to choose the correct APN for the inserted SIM card.
However, if you are using a SIM card from a less known network, or a subsidiary, you might need to manually specify an APN in order to connect to the network.
It is also worth noting, that if a SIM card has never been activated, i.e., it has never been connected to a mobile network before, then you might need use it with a mobile phone first to establish a connection, and then insert it into the router for it to work.
This is rare but is a step in troubleshooting a 4G/5G router that is not able to connect to a mobile network.

 

Manually Specifying an APN Setting

If you are still finding that the router still does not connect to the mobile network automatically, you may need to manually specify the APN setting.
 

You can do this by accessing the web interface of the router, navigating to the Network / WAN page and editing the MOB1S1A1 module (MOB1S1A1 is SIM slot 1 for routers with two SIM slots).

Next, under General Setup, untick the Auto APN toggle, select -- Custom – which will create a new field called Custom APN.
In here, type the APN settings, this example is using everywhere. Find your network provider's APN settings on our chart of "APN settings for UK mobile networks".
Once done, click the Save and Apply button.

 

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How To Change APN Settings in InHand Routers

To configure manual APN settings on an Inhand router, you must first access the InHand IP address web interface, once there navigate to the Network tab across the top of the page, then select the Cellular settings.

On this Cellular settings page, you can edit the first SIM profile (Index 1) along the bottom of the page.
Simply enter your SIM card's APN phrase into the APN field, and fill in the Username and Password fields if your SIM provider requires this also (many SIM card providers often leave this field blank, but check with your provider). Once you have filled in your APN setting information, click OK on the right-hand side, followed by Apply in the bottom left.

The example below shows the APN details for an EE SIM card being entered into the page.

To confirm that the router is successfully connected to the mobile network, navigate to the Status tab across the top of the page, then click into Modem settings. If the Register Status is "Registered", as shown in the example below, then it is configured correctly and working.

 

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Updated: Daniel Coombs - 14.08.2025.
Author: Ryan Johnson - 03.09.2021.

 

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