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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LCD went out. Black screen. Can hear phone.

I have done an iPhone 6 housing replacement and it went smoothly. I am clumsy and have had to replace the screen 5 times. I installed the newest one two days ago. I was on Snapchat and used it then locked it. Then the brightness was on full and I could barely see anything (and auto brightness was off). It randomly went back to normal after 30 minutes. Then the screen completely went black. I can hear and the phone, feel the vibration but I can't see anything. The LCD and battery are both working fine because I tested them on another iPhone 6. So it has to be the logic board. Anyone have any suggestions?

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Chosen Solution

I would recommend that you inspect the connectors very carefully. Use a magnifying glass or even better a jeweler's loupe.

Those connectors are very delicate and are only rated for a dozen or so insertions. They can probably last a lot longer but they do break very easily. All it takes is one bad pin to cause all kinds of problems (see attached picture, it's an iPad mini but has the same kind of damage).

Block Image

You also want to inspect the area around the connectors as the small surface mount components sometimes get torn away (Pry Damage). If everything looks okay, you could try a known-good screen again.

If you want to avoid the cost or hassle, look for a repair shop that can also do micro-soldering, that way they can help you wether it is a screen replacement or logic board problem.

Jeweler's Loupe LED Magnifier Image


Jeweler's Loupe LED Magnifier


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