i have this device but have only used one SIM card up to now, sorry.
i found a "work" around sort of. using tmobile sim apn settings are unlocked and edit-able.
using the verizon sim (which was editable before upgrade) is still locked out but apn settings are present and i can go into them just
not able to change them. however, if i remove both sims and swap the verizon sim into the opposite slot (if the device is powered down or restarts PERIOD)
itll pick up service, i can then insert the other sim into the opposite slot and all is good.
but again, if the device powers down, the Verizon sim no longer works and shows via *#*#4636#*#* it does indeed have signal just no network activity.
not sure the issue. so i try to not allow it to completely shut down lol.
to make this easier to follow for those having this issue,
remove both sims with device on,
power down device, insert (sim that has issues) into the opposing slot,
make sure it gets service, once its in signal and can get internet access and call out etc,
then leave the device on, remove sim slot tray, insert the other sim into the open slot. and
dont let the phone be shut off. otherwise you need to do this again!
used shortcut maker to try changing country codes, bands, frequencies etc nothing worked. so this is the only "way" this far ive found.
talking to "VERIZON" support is useless as the IMEI of the device doesn't register for them and they claim the device is "none 5G capable let alone
a "GOOD" phone lol" better than my s21ultra 5g ever thought about being. now, good luck and if anyone has a TRUE solution let me know.
downgrading does not work so dont bother!
