Update Location for iOS 12

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

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