Yesterday, I installed the 0.17 update on my FP3. Now, my mobile internet connection is not working any longer. WiFi works fine. Any suggestions what to do? Is there an easy way to reinstall an earlier version of eOS? Thank you in advance for your help…
Have you tried Settings | System | Advanced | Reset options | Reset Wi-Fi, mobile & Bluetooth? That worked for me when mobile data stopped working after an /e/ update (on a different phone, not a Fairphone, but worth a try)
I also have issues with my mobile internet connection, especially when I change from wifi to LTE. I haven’t try the hint @AnotherElk suggested yet, but I work around this problem by dialing a random number or something like -100- and somehow, the mobile internet connection starts then.
Ok, please check whether the APN settings for your KPN plan are still correct at Settings - Network and internet - Mobile network - Advanced - Access point names - (tap on the desired entry).
Most providers have the correct APN parameters for their plans somewhere on their websites.