OPPO A57 4G

OPPO A57 4G

Android 12.0

I can't start my OPPO A57 4G Android 12.0

Cause 6 of 6: Your phone is locked to Vodafone

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

Solution: To use a SIM from another operator, you need to get a Network Unlock Code to have your phone unlocked.

OPPO A57 4G

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