Sony Xperia XZ Premium

Android 7.1

I can't start my Sony Xperia XZ Premium Android 7.1

Cause 3 of 7: Your phone is locked to Vodafone

If your phone is locked to Vodafone and you try to use a SIM from another operator, the display will tell that your SIM is invalid.

Solution: To use a SIM from another operator, contact customer services to have your phone unlocked.

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