I have a Pixel 8 that I bought straight from google online, and it's carrier unlocked. I've flashed the phone with Grapheneos and was enjoying it without a SIM, but now that I have my Version SIM put into the phone I'm having issues. The SIM will work for a few minutes and then just stop working, and to fix it temporarily I have to restart the phone. In settings it sees the SIM, but under "Calls & SMS" it says "Verizon (Temporarily unavailable)".
I have:
Factory reset the phone.
Gotten a whole new SIM card with and moved my account to it with the carrier
Done multiple reboots
I'm fearing that I must re-flash it as stock google android which might not even fix the issue. I really don't want to buy a new phone and give up on Graphenos.
Does anyone know what I should try next or has anyone had this issue before?