4-inch iPhone released in March 2016 with similar hardware specifications to the 6s. Available in Silver, Space Grey, Gold, or Rose Gold with 16/64 GB storage options. Model A1662 and A1723.

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Recently replaced the screen and the home button is overheating.

I have just the other day replaced a cracked screen on an iPhone SE with a screen I ordered from this site. Since then the home button has been getting white hot to the touch while the screen is turned off, also the excess energy going to the button causes the phone's battery to run down quickly. I did some research that indicated that I should try reseating the cable that goes from the button to the logic board, and I have tried that however, it has not resolved the issue.

What else can I do?

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Presumably, you have installed your original home button on the replacement screen. If you disconnect the Home Button, does the battery drain issue go away completely? If it does, then we can isolate the issue to the Home Button.

Perhaps you damaged the button or flex, however minimally, while moving it from one screen to the next. Check it under magnification and look for any tears, even the tiniest ones. Also look receptacle on the Lightning Port. It may the one that is damaged (you'd actually be lucky if that was the only problem).

You could try a "new" button but you would lose Touch ID functionality.

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Thanks for the answer, the top layer of the home button does have some damage on it, scratches and a few hairline fractures. The flex had glue strips that affixed it to the original screen and I did my best to remove that glue as well as the fragments of the original screen. I would be fine with replacing the button itself however iFixit does not sell that product (at the time of this writing) so I do not see a way to accomplish that. The lighting port is actually in good shape, however I have found that both cameras are no longer functioning.

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Both cameras not functioning point to a logic board issue. For the button, you could just order the iPhone 5S button, they're the same. Check here as an alternative (among many): https://www.mobilesentrix.com/iphone-5s-...

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