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Released on September 19, 2014, this 4.7" screen iPhone is the smaller version of the iPhone 6 Plus. Identifiable by the model numbers A1549, A1586, and A1589.

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iPhone 6 won't hold a charger after battery replacement

I bought the ifixit iPhone 6 battery repair kit and successfully installed the new battery. My issue is my phone still dies when it reaches around 50% battery life. When i plug it in and it boots back up the battery shows 1-6% on it. This only started being an issue after about a month of using the new battery, although the new battery never let me use my phone to 1%, always dying around 10-15% from the start.

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It could be a poor quality replacement battery. To be certain, use a battery utility, such as coconutBattery (for Mac) or 3uTools (for Windows). It will tell you what the health of the battery is. Anything less than 80% of design capacity will require replacement. After testing the battery, I would contact iFixit Support to see about a replacement.

It is possible that you have an issue on the logic board so if another replacement battery behaves the same way, that is where I would look for the problem.

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CoconutBattery says "perfect" and its at 100% capacity (1751/1751 mAh). Is replacing a logic board a complicated/cost effective fix and or even worth doing?

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The logic board is the phone. You may as well replace the phone. I am suggesting a micro-soldering repair.

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maybe the battery is not in good condition.

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Zachary Kessler crwdns2893898:0crwdne2893898:0
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