before contacting a service professional.
Problems Causes Solutions
Red LED does
not work when
power connected
The fuse blows Replace the fuse
Fail to connect
network
Wrong installation of SIM card
Check SIM card installation
(►4.1 Install SIM card)
Filth on the SIM card iron surface. Clean it
Useless SIM Contact internet service provider
Improper installation
Check installation of device
(►4.3 Install the device)
Beyond GSM service area
Use it in effective GSM service
offer area
Bad signal Try again in a better signal area
Fail to charge
The voltage is unsuitable
Connect with power with suitable
voltage
Improper connection Check connection with charger
Safety Precautions
Handle and dispose of batteries and chargers with care
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