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Troubleshooting
This chapter lists some problems you might encounter while using your phone. Some problems
require you to call your service provider, but most are easy to fix yourself.
Message
Possible causes
There is no SIM card
SIM error
in the phone or it is
inserted incorrectly.
Signal is weak or you
No network
are outside the carrier
connection/
network.
Losing
Operator applied new
network
services.
156
Possible corrective measures
Make sure that the SIM card is correctly inserted.
Move towards a window or into an open area. Check the
network operator coverage map.
Check whether the SIM card is more than 6~12 months
old. If so, change your SIM at your network provider's
nearest branch. Contact your service provider.
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