How to get my old IPhone 4 to work again?

I have had it for maybe a year and it recently died and then I plugged it into the charger after a few hours and it wouldn't come on. I even left it on the charger overnight. This was a few months ago and now I need it to work because my current phone was stolen and money is tight. Plus I would really like for this phone to work.

The battery in your old phone needs to be replaced at a local phone repair shop. The batteries don't last forever, especially if left uncharged for long periods.

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