### Describe your issue In the settings I use ''2G, 3G, 4G (Preferred)'' in 'Mobile -> Network Mode'. Whenever I receive or make a call the top-bar indication changes from 4G to 2G during the call, only to revert to ''4G'' after the call ends. When I explicitly select 4G only I can neither receive nor make a call. On the caller side, a prerecorded message of my SIM carrier indicates that my phone is probably inactive. 2G and 3G only allow for incoming and outgoing calls as expected. As a side note, the other side experience a static noise when I am on 2G, that seems not to be there when I use 3G, although I need to test that more thoroughly. #### Expected Behavior ''4G only'' Network mode should not interfere with the ability to make/receive calls. If anything, it should improve a call's quality. ### How reproducible is the bug? It happens on every call. I just now started to explicitly test it. ### What device are you using? PinePhone Beta Edition. ### Which mobian repository are you using? main non-free ### How did you get your Mobian Image? * https://images.mobian-project.org <!-- Bug Report labels. Please remove if not relevant --> <!--Feature Request label. Please Remove the label above and uncomment this if relevant --> <!-- /label ~"Feature Request" -->