Samsung Galaxy J3 (2016)
Select network
You can set your phone to select a network automatically or you can select a network manually. If you select a network manually, your phone will lose network connection when the selected network is out of reach.
Slide your finger downwards starting from the top of the screen.
Press the settings icon.
Press Mobile networks.
Press Network operators and your phone will search for networks.
Press Search networks.
Press the required network.
If you want to select a network automatically, press Select automatically.
Press the Home key to return to the home screen.
1. 1. Find "Network operators"
2. 2. Select network
3. 3. Return to the home screen