Mobile Carriers in the United States

[rocket2nfinity]

Verizon does support VoLTE but even though  they are shutting down their 2G network right now, they are still requiring  certification of the device. So you are unlkily to be able to make calls now or in the near future with them or their MVNOs. Their MVNOs should allow data access - PagePlus etc. But someone else will have to confirm this.

AT&T last month said they are opening any phone with functional VoLTE on their network in preparation  of shutting their 2G network in 2022. It may or may not have been done yet in your area, nor do I know what steps, updates the pinephone community will need to do to make that happen. But you should at least get data.

T-mobile and their MVNOs should work for now. I think they are your best bet. But activate the SIM in another phone first. Metro by Tmobile by the way will require you to call them or go into their store to activate the device on their network. They still lock Sims to the IMEI, so you wont be able to transfer it without calling customer service.

You might be having an APN issue. I got denied at first because Ubuntu Touch didn't update my APN settings

Verizon via PPC is probably similar in locking the sim to the IMEI unless it's just poor reception.  I bought an inexpensive phone to swap SIM to the pinephone.  SIM has been okay, a single bar and working on the inexpensive phone.  I swapped the SIM to the pinephone with ubuntu touch.  No SIM detected.  Shut it down and pulled the sdcard and booted to the test screen,  Automatic tests failed the modem.  Went to the modem and it slowly populated, then a minute later it identified the card and showed VoLTE and incoming but -86dbm.  Went back to automatic tests and modem passed.  I shut it down again and readded the sdcard with ubuntu.  Rebooted and still No SIM detected.  Went outside looking for a signal but no joy.



soyrunner

That is a very weak signal. But it sounds like your modem is not on when in Ubuntu Touch. Did you try inputting this in terminal in Ubuntu Touch?

Code:

sudo /usr/share/ofono/scripts/enable-modem
sudo /usr/share/ofono/scripts/online-modem