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You can set your tablet to select a network automatically or you can select a network manually. If you select a network manually, your tablet will lose network connection when the selected network is out of reach.
1. Find "Network operators"
Slide your finger downwards starting from the top of the screen.
Press the settings icon.
Press Mobile networks.
Press Network operators.
2. Select network manually
If you want to select a network manually, press Search networks and wait while your tablet searches for networks.
Press the required network.
3. Select network automatically
If you want to select a network automatically, press Select automatically.
4. Return to the home screen
Press the Home key to return to the home screen.