I have problems starting my Google Pixel 3
If you can't start your phone, after having turned it on, there may be several causes of the problem.
Contact customer services to have a new SIM sent to you.
Contact customer services to have a new SIM sent to you.
Check that the SIM PIN is correct.
Before you can use a SIM from O2, you need to unlock your phone using an unlock code. To get the unlock code, contact the operator that locked your phone.
Slide two fingers downwards starting from the top of the screen.
Sign in to the O2 website to have your phone unlocked.
Sign in to the O2 website to get the PUK.
