Troubleshooting - M-Life ML0653 Owner's Manual

5. Troubleshooting

Problem
SIM card error
Poor received signal
quality
EN
48
Cause
The SIM card is damaged
The SIM card is not in
position
The metal face of the SIM
card is polluted
Signals are obstructed.
For instance, radio waves
cannot be effectively
transmitted nearby a high
building or in a basement.
Line congestions occur
when you use the mobile
phone in high-traffic hours
Solution
Contact your network
service provider
Check the SIM card
Clean the SIM card with a
clean cloth
Move to a place where
signals can be effectively
transmitted
Avoid using the mobile
phone in high-traffic
hours