User's Manual

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your network operator.
3. If there is oxidation on the surface of SIM card or SIM card slot of the mobile phone, please wipe with alcohol or clean
cloth.
4. Please contact ××× Service Center or ××× Maintenance Department if the above methods are invalid.
6.2 Checking and precautions of PIN, PIN2, PUK, PUK2 and password:
1. Please consult local network operator.
2. The SIM card is locked if you input invalid PIN code for three times continuously.
3. Please consult SIM card operator for PUK code.
6.3 Network connection fails
1. The signals in your local place are weak or have shielding. Please move to other places and try again.
2. Please contact ××× Service Center or ××× Maintenance Department to do phone test.
6.4 You can’t be heard
1. Make sure whether it is network problem and try again.
2. The communication lines in some places are bad. Please move to other places and try again.
3. The trunk line of network operator is bad.
4. Please contact ××× Service Center or ××× Maintenance Department if the above methods are invalid.
6.5 Can’t charge the battery
1. The contact between charger and mobile phone is bad. Make sure whether the installation is proper.
2. Check whether the battery is valid. The battery performance drops after several years.
6.6 Weak signal
1. If the local network signals are unstable, the signals the mobile phone receives won’t be stable. Please move to
other places and try again.
2. Please contact ××× Service Center or ××× Maintenance Department if the above method is invalid.
6.7 Can’t make a call
1. The local network signals are weak and please move to places with strong signals and try again.
2. Local network operator is busy. Please try again later.
3. Check whether Hide Number is enabled. You can’t make a call if the local network operator doesn’t support this
function and you have enabled it.
4. Please contact ××× Service Center or ××× Maintenance Department if the above methods are invalid.