Chosen Solution
How do I deal with notification of invalid sim card
can you get into settings? The first thing I usually do is go into settings and make sure the IMEI is showing up. If the IMEI is showing up, then it could be a bad SIM card or possibly sim card reader. I would start with a new SIM since that’s the easiest fix. If the IMEI is not showing up, then its more than likely a problem with a chip on the logic board.
