EN
48
5. Troubleshooting
Problem
Cause
Solution
SIM card error
The SIM card is damaged
Contact your network
service provider
The SIM card is not in
position
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 waves
cannot be effectively
transmitted nearby a high
building or in a basement.
Move to a place where
signals can be effectively
transmitted
Line congestions occur
when you use the mobile
phone in high-traffic hours
Avoid using the mobile
phone in high-traffic
hours
Summary of Contents for ML0653
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