iPhone 7 Speaker Amp U3301
iPad Rehab Microsoldering

iPhone 7 Speaker Amp U3301

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This is the chip that causes iPhone 7/7p to hang at Apple logo and boot loop after update to iOS 13.

It can also cause similar symptoms to iPhone 7 audio ic fault.  This is NOT the main “audio ic” U3101, this chip is the smaller speaker amp u3301 at the north end of the board.