Why does my iPhone shut off randomly all the time?

I have an iPhone 5s and I have had it for more than a year now. As of recently, when I use it, I could be texting, snapchatting or watching youtube videos and out of nowhere with no warning, It just turns off. The apple logo comes on the screen and then It turns off again. It comes on and then turns off and it stays like that for about 10-30 minutes. I don't know why it's been doing this and it's getting really annoying.

Same thing happened to me about a year ago and I ended up taking it to the apple store which they said it was an internal hardware issue. It was still under warranty so they replaced it but just yesterday the same thing started happening again and the warranty is no longer good. I'm afraid it will shut off and not start back up again like last time so today I plan on saving all my pictures and information. They only make these devices to last a couple years so you can keep upgrading.

See if you need to update. They mess with your iPhone if you don't update.

Mine won't charge when I dismiss an update. It's fine this for 2-3 updates now. As soon as I update, my iPhone starts working properly again. Before that, safari wouldn't be irk, until I updated.

That's how Apple kills your iPhone and makes you buy another one.

It could be the battery. I have a cousin who has the 5 and something like this happened, except it would get stuck on the Apple screen all the time. I replaced the battery, and it was fixed.

However, there's no easy way for us to tell you what is wrong without actually seeing it. It could be a bad battery or a logic board issue. If it is the latter, it probably is cheaper to buy a new phone than to fix it.

Mine did that too after i had water damage in it. I would bring it to a store

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