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Repair information and guides for the iPhone 6 Plus that was released on September 19, 2014. Model: A1522, A1524

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Severe battery drain on standby after screen replacement

It seems like right after Ithis iPhone screen got replaced a while back at a third party and for some reason, the phone now has a really bad battery drain on standby. I checked the battery health and it is at 90 percent and when I use the phone it dies as expected. However, the standby times for it are really bad. In probably a day the phone is at zero. I’ve even tried this with a restore from iTunes and no apps installed but the battery drain is still there. Is it because of the screen replacement? Also now when I plug it in it shows the apple logo for a few seconds, then goes black, then shows the logo again and it just cycles through this endlessly. I don’t know if it drained before the screen replacement but I’m certain that iPhones can standby for a lot longer than 24 hours and this dies in less than a day. Any ideas on what could be causing this?

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If you were having problems with battery drain and now the phone is boot looping it would point to a bad battery. Replace the battery and it should be fine, they don’t cost that much.

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The thing is that beforehand the battery was at 80 percent health and it drained like crazy in standby even after a clean install.

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If the battery health is indeed 80% it is due for a battery replacement.

From experience from my clients it seems that around 80% or lower is when they notice the battery is not holding its charge as well as it used to when it was new.

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This will either be a board problem or parts problem. We always rule out parts first which in this case would be the battery.

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I have gotten around to replacing the battery and it is still draining really quickly. One full day on standby and it's at zero.

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To troubleshoot this problem further you would need some of the following equipment and electronics knowledge. If you haven’t, the device would need to go to a repair shop.

• Multimeter.

• DCPS.

• Microscope.

• Board view software.

• Knowledge of power rails on the IPhone.

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