Is it HTC One M7? There’s a lot of “Ones” :slight_smile: Also could you please check that there’s no “confirm dialog” or something of that sort when we try to turn the mobile data on? Some carriers like to put things like that in their phones. You can also check if some other apps (widgets maybe) are able to turn mobile data on, because it might happen that the dialog won’t appear in our case, because we do it pretty quickly after the screen gets back on, while the device is still locked.

Thanks

Ondra