iPhone 7 not able to connect to cellular service
Since last afternoon I am unable to connect my iPhone 7 to AT&T. First the o/s upgrade got halted. Then I managed to upgrade the o/s by connecting the phone to a laptop (iTunes way). Still even after having the latest update of iOS (13.4) the phone is not able to connect to AT&T. Until now this never happened in last 3 and 1/2 years. Have restarted the phone many times. No luck so far.