iPhone 6 headphone and earpiece speaker rattle after iOS 8.3
After updating to iOS 8.3 earpiece speaker makes rattling sound on my iPhone 6. Headphones have the same problem. The issue doesn't take place after downgrading to iOS 8.2. I know at least 5 6 persons who have the same issue on iPhone 6.
P.S I set up my iPhone as a new in both cases.
Steps to reproduce:
1. Call someone.
2. Increase the volume to 70%-100%
3. Listen