Chosen Solution
My iPhone SE can’t make/receive calls, send/receive text messages or use network data. I’ve checked a few other threads here so have checked the modem firmware - it has a number there. I’ve reset network/APN settings, put the sim in and out and have reset the phone entirely.. My sim card works in another phone, so it’s not my account. Could the antenna be broken?
It’s possible that an antenna was damaged (was the phone dropped or repaired or came into contact with water?) but realistically, you probably have logic board issues with the baseband portion of the board. If you’d like, you could open the device and inspect for any obvious or physical damage inside, especially to the antenna’s and wire interconnects.
