Troubleshooting

If your device isn't working properly, you can try several solutions to solve the problem.
In most cases you can solve the problem by following these guidelines:

If you've activated manual network selection and are out of range of the selected network, you can't make calls.

Solution: Activate automatic network selection.

Step 1 of 8

Slide your finger down the display starting from the top edge of your mobile phone.
Press the settings icon.

Step 2 of 8

Press Mobile data.

Step 3 of 8

Press Network operators.

HTC One M9
Step 4 of 8

Select one of the following options:
Select network manually, go to 2a.
Select network automatically, go to 2b.

Step 5 of 8

Press Search networks.

Step 6 of 8

Press the required network.
Your display will tell you if you have access to the network you've selected.

Step 7 of 8

Press Select automatically.

Step 8 of 8

Press the home icon to end the session and return to the Home screen.

1 Find " Network operators"

Slide your finger down the display starting from the top edge of your mobile phone.
Press the settings icon.
Press Mobile data.
Press Network operators.

2 Select option

Select one of the following options:
Select network manually, go to 2a.
Select network automatically, go to 2b.
HTC One M9

3 2a - Select a network manually

Press Search networks.
Press the required network.
Your display will tell you if you have access to the network you've selected.

4 2b - Select a network automatically

Press Select automatically.

5 Return to the Home screen

Press the home icon to end the session and return to the Home screen.