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Hello, I’ve changed whole back case, battery and lcd.. Phone worked normally for like 3 days and suddenly it wouldn’t charge anymore. It would stuck on 1% on charger and if disconnected from charger, it would turn off. Anyways, it still could turn on and charge to max 1%. I’ve carried my phone to three top services in my city and after the first one I couldn’t even turn on my phone anymore - like its dead. He said that battery is over drained and the second one said he doesn’t know what the problem is, because both of them have checked U2 Chip, replaced battery, checked voltages, everything acts like normal, but problem still persists. Still, the third one said something is wrong with motherboard and they don’t have time for investigation, because after placing new battery it would get over heated and discharged very fast. I’m stuck and out of possibilities. Phone is basically new without scratches now, but I can’t use it. Please if anyone want to read my problem above and help me I’d be thankful. Thanks
I may be mistaken here but an iPhone does not normally boot/turn on when there is only 1% charge. If it is already on, it will work until the battery gets down to 1% though. With a housing change, plus new battery and screen, so much could have gone wrong. There are simply too many variables here to give an easy diagnostic. It also doesn’t sound like the shops (the first two) that looked at the phone are “top” in any way. Batteries cannot be over drained; they are charged or drained. There is more to charging circuits than U2 (Tristar) and batteries. I don’t know how comfortable you are troubleshooting this kind of thing so I’m hesitant to give you too much direction. Fundamentally though, I would go bare bones. Start with a minimum configuration (Logic board, dock and battery), connect to an 3uTools/iTunes enabled computer and see if the phone boots and charges. If you have access to a USB Ammeter, you could use that to determine if the phone is really drawing current when it says it’s charging. If things work, then add flexes to see if something causes the issue. If the phone still has the same issues, then you have a logic board problem (could still be the dock though) and you need to find a reputable micro-solderer. There are lot’s of mail-in options and most use a no fix/no fee pricing policy.
Same thing happened to my wife’s iPhone 6. Just died, wouldn’t take charge and wouldn’t turn on. We go the apple store (a place I despise - full of hipsters) and the “genius” there says ‘well this phone will not turn on again, it will never work again’ and then tried to coerce $300 from me to buy a new “guaranteed to fail when we update your software” phone… I declined… I walked outside, dropped the phone from 5 feet and then hit the power button… BOOM… it powered on… been working ever since. I will never buy another Apple product so long as they have predatory software updates that nuke your over-priced phone. Seriously, the new phone is $1,100??? For a 1 year warrantied phone??? You kidding me? No thanks. I’ve gone flip phone low-tech and LOVING it. I have navigation in my car, I have a computer at work and at home. I think we can all do well to unplug and just get to know the world we live in… go anywhere and all you see are zombies looking down hunched over to their phone. Don’t be that guy.
Bad batteries do drain below their tolerance level… a faulty u2 ic can stop it from charging and a shorted board can cause it to drain below the tolerance for it to show the battery symbol and a damaged u2 could mean it’s not charging anyway Iphone are supposed to switch off when they are below 5% and then when charged turn on at 5% anything lower when they start up usually means a bad battery 1% is usually a bad battery Phones like to update, I get it a lot where people bring in dead phones that appear dead but show up in recovery mode in itunes. It is possible ur phone wanted to do an update or attempted an update ur battery died and it corrupted the update, especially if u had a bad battery 1, try a known good battery or a battery from a good source lol 2, if you changed the charging flex when u changed chassis use ur old chaging flex and see if the battery goes up 3, feel for heat on the board 4, if it’s still in recovery mode do a restore u will loose ur stuff and if it comes up with an error tell us what the error is… Replace the word u2 in this with Tristar lol
I plugged up my phone then the charger exploded and the phone charging port and it has some burn marks, It was hot so I was dumb as !&&* to put it in the freezer, the burn marks are still in it and now It was cold, I put it in a warm place and it still would be cold, to this day it is still
