When backlight turns of wont turn back on!!!

So I just got a new torch and if I let my phones backlight turn off it wont turn back on like it is locked and I have to take the battery out for it to work again.

So basically if I want to use my phone I have to keep touching it so it wont lock and turn the light off.

I can get calls but cant see anything once the light goes off.

any idea what is going on?

Thanks

Are you sure you're not hitting the VERY easy to hit lock button at the top. It automatically dims and it won't let you do anything until you hit it.

If not reload your OS if that doesn't work get a replacement.

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