Update Location for iOS 12
- On main screen, select (Settings)
- And then (Cellular)
- Select (Cellular Network)
- At Cellular Network, (Automatic) is turned on that means Cellular network is automatically selected
- Tap (Automatic), it’ll display network name list
- Choose network that is not True e.g. AIS / dtac /TOT
- Wait for a while, (No Service) will appear at top left
- Back to choose True or Automatic by tapping a button to turn on (Automatic) again
- After successfully registered on network, at top left it’ll show network name and test again