EN
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5 Troubleshooting
Problem Cause Solution
SIM card error The SIM card is damaged Contact your network se-
rvice provider
The SIM card is not in po-
sition
Check the SIM card
The metal face of the SIM
card is polluted
Clean the SIM card with a
clean cloth
Poor received signal
quality
Signals are obstructed.
For instance, radio wa-
ves cannot be effectively
transmitted nearby a high
building or in a basement.
Move to a place where si-
gnals can be effectively
transmitted
Line congestions occur
when you use the mobile
phone in high-trafc hours
Avoid using the mobi-
le phone in high-traf-
c hours
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