Apple's field test has been notoriously half baked since the iPhones launch, when Apple updates the modem stack, they typically update field test mode
If you have a 16e - can you confirm if there's a new field test mode given the c1? To access, dial *3001#12345#* and send a screenshot (blur your phone # if it's on it)
If you have a 16e - can you confirm if there's a new field test mode given the c1? To access, dial *3001#12345#* and send a screenshot (blur your phone # if it's on it)