FP4. Troubleshoot the mobile data connection

If you are having issues using mobile data on your Fairphone 4 5G (FP4), please make sure to read the article FP4. Connect to Mobile data.
If you are still having issues after going through the article, please proceed in order with the next steps.


Check your mobile network

Make sure that your Fairphone connects to the right network provider:

  1. Go to Settings → Network and Internet → Mobile Networks. If needed, select the tab related to the SIM card you are troubleshooting.
  2. Make sure Mobile data is enabled. You might need to enable Roaming (check with your provider as you may incur additional costs).
  3. Tap on Advanced and disable the option Automatically select network. The phone will scan for all available operators, and this might take a bit.
  4. Manually select your network operator. If your data connection starts working, you might have been registered on the wrong network.


Mobile internet settings (APN)

If you still cannot connect or send and receive MMS, it usually means there is an issue with your APNs (Access Point Names) settings.
You will have to find out if the settings required by your provider match with those on your Fairphone. Contact your network provider to get the correct APN mobile internet settings. You might also try checking their website.
Check the article FP4. Manually set APNs for Mobile data, Hotspot & MMS to verify these settings on your Fairphone.
We also recommend consulting the forum of your provider for a mention of issues like yours.


Set your data to a specific network type

If you are still not connected, try different connection protocols (4G/3G/2G)

5G, 4G, and 3G

For maximum performance, you can enable the 5G connection on both SIM card and eSIM.
To set 5G: go to Settings → Network, and Internet → Mobile network → tap on the name of your provider → Advanced → Preferred network type → select 5G/4G/3G/2G auto.

Alternatively, if it still doesn't work, you can select 4G/3G/2G auto or 3G/2G auto.


Check your SIM card

In the case of a physical SIM card, if this does not solve your issue, check the article FP4. Identify and solve SIM card issues.

If the SIM card is old or damaged, contact your provider to get a new SIM card.

If the issues persist, or in the case of an eSIM, the phone might be trying to connect using a network protocol that is not supported by your contract. Contact your provider for more information.


If after reading the article you need more help, get in touch with our Customer Support.