mobile

I'm currently on holiday in Majorca, today the screen stopped working, the backlight comes on but nothing displays, I'm still getting notifications. I powered it off and left it for a while, now it shows the Sony and powered by Android screens but then goes off during the next animation
Any ideas what I can do?
I was using it for 4k video recording, photos and the only means of contacting people, currently on my wife's phone using the free WiFi in reception but we cannot use it for calls or texts.

Any help appreciated

I've used the 'off' thing under the flap a few times by the way, that's the only way I can turn it off at the moment