I’ve an iPhone 6 that is frozen. I’ve followed all the internet reboot/restart instructions but none work. Advice please. Jim Chapman

Problem resolved.

Because the screen image was frozen and still visible the battery eventually ran down causing the phone to automatically switch off.

I inserted the charging cable and, when sufficiently charged, logged in normally without any problem.

Thanks for your assistance.

Background:

I was playing Killer Sudoku (Sudoku.com version) when an advertisement displayed on the screen (a regular occurrence). When the advert finished the iPhone screen returned to the Killer Sudoku screen which “froze”. That image is still displaying (6 hours on!). So the image is visible and when it dims, if I press the screen it brightens. So I don’t think there’s a problem there.

Unfortunately, I cannot get any other displays and the side buttons no longer function. When I follow the instructions to power off (e.g. depress down volume and power off simultaneously) I get through to the UK Emergency services switchboard!!!!

So everything appears to be physically okay but the software is frozen (my layman’s description).

Hope the above is more meaningful.

Screen not broken and, if it was, don’t understand how that would affect the buttons.

Just established it’s an iPhone SE,