Calls and contacts
Apps and media
Cause 2 of 3: Your phone isn't assembled correctly
If your phone isn't assembled correctly, you can't turn on your phone.
Solution: Make sure your phone is assembled correctly.
Insert your SIM
Turn the back of your phone towards you.Open the cover.
Turn your SIM as illustrated on the cover.
Slide your SIM into the SIM holder until it clicks into place.
Close the cover again.