Iphone has suddenly just shut off and won't come back on?

I was using my iphone and it had 53% batterylife and then it just turned off and now it won't come back on.
I tried plugging it in, but to no avail. Anyone know how to fix this?

Every phone once in a while does this.

Assuming that the battery has not died you need to perform a "soft reset"

A true " soft reset" is a battery pull physically removing the battery
The phone will NOT register battery has been charged or is charged until this is done

The problem you have is iPhone have a fixed in battery

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