• GPRS service: allows you to select whether a
GPRS connection is to be established
• Data roaming: allows you to select whether data
connections are to be made while roaming
• Preferred SIM: you can choose which card to use
for your data connection.
• Network selection: you can select the operator
manually or automatically.
• Network type: you can choose your preferred
type of connection to a 4G/3G/2G network
• VoLte: you can enable or disable making calls via
LTE
WARNING! The options are designed for advanced
users. Improperly changed settings can lead to a
deterioration in service quality or an inability to make
calls.
23. FAQ (troubleshooting)
Only qualified service is authorized to repair the
phone. DAny attempts of unauthorized repair and
modifications are not allowed and they might void
the Manufacturer’s warranty!
Make sure the number you are dialling is
correct. If you make an international phone
call, dial a country code before the actual
number (eg. 0049 or +49 for Germany).
If you have a prepaid card, make sure there
are sufficient funds available on the card to
make a phone call.
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