Blu Z3 Manual page 13

 Ensure that the battery being used is a BLU approved battery.
 Double check if the charger connector is properly connected to the phone and to the wall outlet.
Note: Connect charger only after the battery has been inserted.
The standby time is too short
 Please keep in mind that standby time relates directly to phone usage (Text, Voice Calls, etc.).
 Batteries typically have to be replaced after a year of use (Replace with BLU batteries only).
The phone cannot connect to the network
 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
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