49
Connect to other devices
Please read the user manual of the device to get more
detailed security instructions before connecting to other
devices and do not connect to an incompatible product.
SOS emergency calls
Make sure your mobile phone is switched on and in a service
area. In idle mode, input the SOS number, then press the
Dial Key. Advise where you are and do not hang up without
permission.
50
Frequently Asked Questions and
Troubleshooting
Frequently
Asked
Questions
Cause and Solution
Fail to power
on
Press the power on key for more than 1 second.
Check if the battery is properly connected. Please
remove and install it again, retry to turn it on;
Check if battery is appropriately charged.
Fail to
connect
network
Weak signal. Please try and move to a location with
strong signal and try connecting to the network again;
Please ensure that you are not beyond the network
coverage of service providers;
Please ensure you have a valid SIM card. Please contact
your network provider for further information;
Display
information
while turning
on
Check if the SIM card is installed correctly
Handset lock password. If the handset lock is activated,
you have to input handset password.
Input PIN:
Inputting PIN while turning on each time is
activated, you have to input the PIN code.
Input PUK code:
When you’ve input wrong PIN code
for 3 times will lock the SIM card. You need to input the
PUK code provided by your network provider.
Poor quality
of calling
Please check if the sound volume is tuned improperly
In an area with poor receiving condition, example:
basement, the signal might be weak. Try searching a
location with stronger signal reception and call again.
Summary of Contents for Thunder 340W
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