iPhone 12 Pro Max Network Error
Hi! I bought a used 12 pro max in October, and everything were Ok, until once it has restarted itself, and said "cellular data update failed". I had no cellular, no WiFi, no Bluetooth. All of them were greyed out.
I could fix it by connecting to Mac and update, but since this occasion, this problem comes up many times.
The phone is not blacklisted, I checked it.
Any solution?
Thanks in advance :)
iPhone 12 Pro Max