My Iphone keeps turning on when I turn it off, why?

My Iphone has overheated twice when I was at the beach and it was also wet if that matters, anyway my phone keeps turning on when i turn it off and I don't know why, Please help me

You just answered your own question!

possible heat damage… And/or… Water damage…

electronics, any device, has a temperture range… This is because the motherboard and chips INSIDE the device cna only operate normally if is within these temperatures… If you exceed this range, you will get heat or cold damage…

also, for obviuous reason, get the device wet and its damaged…

Lets us a laptop for an example… What happens to a laptop if I, lets say, put it in the Freezer for 30 minutes? Or how about if I took it to a beach, and, well you know, kept it direct sunlight for 1+ hour(s)… Or even better! What happens when I dip my laptop in water! Or just spill my drink on the keyboard!

so… Yeah… Do a factory restoral on itunes if it will let you… If not, or if issue persists after the restoral, then call your wireless carrier or Apple for a $49-$199 insurance replacmeent, depending on yoru iphone make/model

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