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Need input old password first.
5.6.6 Connectivity
you can use Bluetooth on your phone
5.6.7 Restore factory settings
You can restore settings to the default factory
settings. Default password is 0000.
6 Appendix
Ⅰ
COMMON FAULTS ANALYSIS
Fault Diagnosis
Possible Cause
Cannot switch
on
1.The battery has no power;
2. The battery placement is
incorrect.
SIM card error
1.SIM card is dirty, clean the
SIM card;
2.re-install the SIM card;
3. SIM card is damaged,
replace the SIM card.
Bad/poor
reception
Check the signal strength
indicator Try a better area