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SIM error
SIM card damaged
Please contact with your network
operator.
SIM card not set up
Check if SIM cut-side with right
direction to insert to the slot then
turns on the phone again.
SIM card dirty
Wipe SIM with clean soft cloth
Poor signal
Use phone in undesirable an
area such as basement
Please to be located in signal
good position to answer or to
call.
Use phone in a dense period
cause congestion
Please reduce using cell phones
in dense time.
Can’t turn on
Battery power drained
The battery of device is in low
voltage status, please charging 2
hours then switch on again.
Cannot call
Used a Barring dial function
Stop the Barring dial function
Cannot find a
network
SIM card invalid
Please contact with your network
operator.
Beyond the GSM service area
Please move to internet service
area
Poor signal
Please move to the strong signal
place try again.
Voltage inconsistent with the Please use the charger that is