Chosen Solution
I have an iPhone 6s plus 16GB and I upgraded the storage to 128GB. After that Siri doesn’t work properly. Tried to setup ‘Hey Siri‘ but it doesn’t understand me. How can I solve this? I tried reinstalling iOS, I have the latest version. I checked the mics and they work just fine.
Are you sure the top mic works? This is the only one Siri uses. The only thing that could maybe cause this is the region that was programmed into your new NAND. Did you copy the old NANDS SYS config info over or did you manually add it?
