My iPhone 4 camera suddenly became blurry?

Just yesterday my iPhone 4s back camera became blurry, it was only blurry at the bottom now if I take a picture the whole camera is blurry. I wiped it with a cloth, I turned it off & turned it back on. It can't be water I haven't spilt water on it or anything. My friend says that it's a tiny piece of plastic that protects the camera she said the same thing happened to her phone. Could it be the plastic? If so how do I take it off?

Get a new iphone

The phone probably came with a piece of plastic over the lens for the back camera. If you haven't already, remove that plastic.

Possibly the lens in the cameras has become displaced. If so the repair will be expensive. Definitely not a "do it yourself" repair.

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