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8. Common faults
Demonstration of the faults
Possible causes
Phone cannot be switched on
1. Check if the battery is charged.
2. Check if the battery is inserted in the right way.
3. Remove the battery and insert it again in the phone.
SIM error
1. Dirty SIM card contacts. Clean them with alcohol.
2. Remove the SIM card from the phone and insert it again.
3. SIM card damaged. Exchange the SIM card for the new one.
Bad quality of network
connection
Check the indicator of signal's quality on the display. 5 marks, the signal
is strong. Less than 2 marks, the signal is too weak.
Outgoing calls not possible
1. It is possible that the function for hiding a caller phone number is
switched on, but it is not supported by the network of the mobile operator.
2. Other surrounding devices may cause the interference of the signal.
3. The function for restriction of your outgoing calls is activated.
4. Second line for the same SIM card is activated, but the network of your
mobile operator does not support this function.
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