User guide

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7) SIM Error
 Make sure that SIM card is properly inserted in its intended
spot.
 Make sure that the chip in the SIM card is not damaged or the
SIM card is not scratched.
 Check the coverage of your local network service provider if
you appear to be out of coverage or have weak signal. You may
opt to move near a window.
8) Cannot make calls
 Make sure that the number you dialed is correct and the dial
key has been pressed.
 Use the full national area code.
 When abroad, use country-specific international access codes
9) Cannot receive calls
 Make sure that your phone is connected to a network (Check if
the network is busy or invalid).
 Check the Call Diverts settings.
 Check the Incoming Call Barring settings.