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The device doesn't ring when a call or message arrives
• Make sure that Do Not Disturb mode is not turned
on. Go to Settings > Sound > Do Not Disturb
preference.
• Press the Volume key to adjust volume.
I forget some passwords/codes/keys on device
• Perform a factory data reset.
• If you still cannot access your device, apply to the
authorised repair centre, but remember that it will
not be regarded as a warranty case.
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