My iphone won't charge? (it goes in a cycle)?

My iphone ran out of battery so i plugged it into the charger. The battery symbol came up on the screen with the little lightning bolt so it look like it was charging. Then it started to turn on so the apple symbol came up. Then it took about 10 minutes and then went back to the battery with the lightning symbol again. This keeps continually going in a cycle and will not turn on. I've tried plugging it into different chargers and the computer but nothing happens.

Try plugging the iPhone on to a computer, this usually helps.

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