1. Find "Mobile Service"
Press Settings.
Press Mobile Service.
2. Select default price plan for mobile data
Press Mobile Data.
Press the required price plan.
3. Turn automatic selection of price plan for mobile data on or off
Press the indicator next to "Allow Mobile Data Switching" to turn the function on or off.
You can set your phone to switch price plan automatically depending on the coverage and signal strength in your area.
Press arrow left.
4. Select default price plan for voice calls and text messaging
Press Default Voice Line.
Press the required price plan.
Press arrow left.
5. Turn use of price plan on or off
Press the required price plan below "SIMs".
Press the indicator next to "Turn On This Line" to turn use of the price plan on or off.
You can temporarily turn use of a price plan on or off if needed. Please note that this is not the same as cancelling a price plan.
Press arrow left.
6. Return to the home screen
Slide your finger upwards starting from the bottom of the screen to return to the home screen.