Won't charge after screen replacement

No—the phone doesn’t care what parts you use. You can put 100% aftermarket parts on an iPhone 7 logic board and it will boot and work just fine as long as the parts themselves are in working order and not defective.

I think you may not have good information on the pedigree of the parts that you’re using however. An Apple store screen replacement for a 7 plus would have been $149. If you are getting an OEM LCD with new glass, plus a housing including all small parts (power/volume flexes, charge port, antennas etc, plus a new battery——for less than $149? All replacement screens are described as “original Apple OEM” etc but that is meaningless. A bona fide original LCD for 7 plus would be about $80 today, where an “original Apple OEM” that is actually the cheapest aftermarket around is $20.

As for custom housing, these are NOTORIOUSLY bad—-the small parts that are in there will make you want to throw up. All the little teeny bits pieces will be missing or cheap. Avoid these at all costs. If you did want to go through the struggle of custom housings, then transfer over every single bit of your OEM parts from your native housing.

You have a lot going on with this phone. It sounds like it is not charging and giving you the accessory not supported message. If this phone was still in its native housing, then your common fault would be a bad tristar chip on the logic board from using non-Apple, non-certified chargers.

But with this history, you’d really need to rule out a few things. One—you need some known good parts. Another iphone 7 plus housing would be ideal. Put the logic board into the known good housing and see if the problem persists. If so, check the logic board—do you have any crushed plastic in the dock connector on the logic board? Do you have any microtears in the charge port flex you’re using for troubleshooting?

It sounds like you have a pile of parts, and you’re a motivated troubleshooter. See what you can do with what you have with the knowledge that A—the phone doesn’t care where the parts came from as long as they work. Aftermarket parts are only bad in that they often have a higher defect rate. And B. Know that you can boot a phone and test charging without the logic board being fulling installed in the housing with all the screws. A logic board can sit on a desk and get a screen plugged in, plus a dock and a battery and it will boot if you plug in the usb.

A usb ammeter is an inexpensive tool that will help you troubleshoot charging issues.

good luck!

jessa