Blu VIVO 5, User Manual

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Verify if you have active service with your service provider.

Contact your local network service provider and verify if you are within its network coverage
area.
The phone displays a SIM Error

Make sure the SIM is properly inserted and in its intended slot.

Make sure that the SIM card is not damaged or scratched.
The PIN code was entered incorrectly three times

The SIM card will lock and you will need to enter the PUK code (PIN Unlock Code). Please
contact your local service provider to obtain the PUK.
I cannot make calls

Make sure that the number you dialed is correct and the dial key has been pressed.

Use the full national area code when dialing out of your area or when abroad, use
country-specific international access codes.
I cannot receive calls

Make sure that your phone is connected to a network.
The caller ID does not display on incoming calls

Contact your local network service provider and verify you have the caller ID feature enabled on
your account or verify if the caller may have blocked his number from appearing.
The caller cannot leave a voicemail message

Contact your local network service provider and verify if the voicemail service is active on your
account or check if the network is busy.