Common Fault Diagnosis - Verykool s4010 User Manual

equipment.
Areas with potentially explosive atmospheres include fuelling areas,
below decks on boats, fuel or chemical transfer or storage facilities, areas
where the air contains chemicals or particles, such as grain, dust, or metal
powders.
Blasting Caps and Areas
Power off your mobile phone or wireless device when in a blasting
area or in areas posted power off "two-way radios" or "electronic devices" to
avoid interfering with blasting operations.

Common fault diagnosis

The faults
Can't turn on
SIM is wrong
Bad signal
The phone
can't call
Can't charge
Taking pictures
is not clear
possible reasons
1、Whether there is electricity in the battery
；
2、Battery is correct.
1、SIM is dirty and clean it；
2、install the SIM again；
3、SIM is wrong，replace it.
Check the signal display in the stutas bar.
May have a strong jamming signal around the
environment.
May be the battery discharge. Need to wait
for a few minutes.
Please make sure that both sides of the
camera lens cleaning.
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