Iphone 4s not turning on or charging after battery was replaced?

Iphone 4s not turning on or charging after battery was replaced? - 1

I bought an iphone 4s on ebay that needed a new screen and battery… I've replaced both then my iphone's cpu got really hot. And it wouldnt power on or charge. Is this a battery issue?

Time for an upgrade.

That maybe because battery was not inserted properly

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