JETHRO SC118, Руководство пользователя, Страница: 30 / 39

Jethro SC118 User Manual
30
according to the manual.

If the SIM card is damaged, contact your network
service provider.
Failure to connect to the network

The network signal is weak. Move to a place with
strong signals and try again.

You have out of network coverage of the network
service provider.

The SIM card is invalid. Contact your network
service provider.
Failure to make an outgoing call

Check whether you have pressed the dialup key.

Check whether the call is forbidden due to
overdue charges.

Check whether the SIM card is valid.

Check whether the call restriction function is
enabled.

Check whether the fixed dialup function is
enabled.
Poor call quality

Check whether the call volume is adjusted
appropriately.

If you use the mobile phone in places with poor
signals, such as around high buildings or in the