My uncles iPhone SE will basically show signal bars. But no carrier and no LTE for a long period of time. Where my aunt has the same phone. No issues. He’s restored and ten restored from backup. It’s been happening since September but has gotten worse lately. He took it to Verizon and they said take it to Apple. His warranty expired a month ago. Should he try and see if they’ll replace it anyways. Or is the issue in the backup