The iPhone 7 series of devices have proven to be very unreliable, suffering from flex-based issues similar to the iPhone 6 Plus (Touch Disease). On the iPhone 7, the fault line runs along the top of the SIM card reader and affects the Baseband CPU and Audio IC. There are a few copper traces running perpendicular to the fault line that connect to the Audio IC that are subject to failing.
Here are the typical symptoms, as collated by the repair community:
- Voice Memos app / Loudspeaker on call - greyed out
- Siri doesn’t hear you / Caller can’t hear you
- Most other Audio related issues that aren’t solved by modular replacements
- Long boot times (3-5 minutes)
- iTunes detects the phone but stuck on the Apple Logo
This requires a micro-soldering repair and is not a DIY fix.
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