e30ernest
Well-known member
I could lock my SIM on my Pixel and that number had to be inserted before the phone would finish booting.
That's a SIM lock though, it's stored on the SIM and not on the phone. So you can just swap out SIMs and you won't have to enter that number again. It's mostly a safeguard that would prevent other people from using your SIM card on another device. I use that already after learning a valuable lesson when I had a phone stolen off me.