1. Find "Mobile Data Options"
Press Settings.
Press Mobile Data.
Press Mobile Data Options.
2. Select network mode
Press the indicator next to "Enable 4G" to turn the function on or off.
If you turn off 4G, your tablet automatically switches between 3G and 2G provided that you're within range of a 3G network.
3. Return to the home screen
Slide your finger upwards starting from the bottom of the screen to return to the home screen.
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