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Repair information and guides for the iPhone 8 that was released on September 22, 2017. Model: A1863, A1905

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Taptic Engine does doesn't work

I’ve got an iPhone 8 without vibrate function. Replacing the Taptic Engine didn’t work, and the replaced part works perfectly when tested in another device. What else could be the problem? I even replaced the flex cable that connects the logic board to the Taptic Engine, to no avail. Any ideas besides it being a problem with the logic board?

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Possibly a damaged logic board

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