Released on September 19, 2014, this 5.5" screen iPhone is the larger version of the iPhone 6.

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Fix to my iPhone. the screen goes dim and then it restarts.

iPhone goes dim randomly and then completely turns off and restarts. Even when the phone is locked and the screen is off it will sometimes restart

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Let's start with this

How to Force Restart an iPhone 6 Plus

Next thing I would do is try a new battery. It's possible it has issues keeping power and being able to do things

iPhone 6 Replacement Battery

iPhone 6 Battery Replacement

iPhone 6 Replacement Battery Image
iPhone 6 Battery Image


iPhone 6 Battery Replacement

Difficulty: Moderate15 - 45 minutes

iPhone 6 Plus Image


How to Force Restart an iPhone 6 Plus

Difficulty: Very easy30 seconds

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I bet it's the battery controller, reading the voltage wrong.


@pccheese I'm thinking logic board


I have tried resetting already.


Ok. I'll update my answer


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