HTC Desire HD

You can't make voice calls - HTC Desire HD

Cause 2 of 9: Flight mode is turned on

If flight mode is turned on, you can't make or receive calls.

Solution: Turn off flight mode.

Step 1 of 3

Activate or deactivate

Press and hold On/Off.

Step 2 of 3

Activate or deactivate

Press Airplane mode.
Depending on the current setting, flight mode is now activated or deactivated.

Step 3 of 3

Activate or deactivate

If you deactivate flight mode:
Key in the PIN and press OK.

Press and hold On/Off.

Press Airplane mode.
Depending on the current setting, flight mode is now activated or deactivated.

If you deactivate flight mode:
Key in the PIN and press OK.