VoiceOver occasionally becomes unresponsive when receiving a phone call

Category: 

Phone

Severity: 

Serious

Description: 

When receiving a phone call, the iPhone will occasionally become unresponsive. VoiceOver does not speak, and you cannot navigate around the screen to see who is calling or choose any options. This has happened when the phone is both muted or unmuted, and often happens to one user when using bluetooth audio.

Bug First Encountered: 

iOS 9.0

How often the bug occurs: 

Infrequently

Device(s) bug has been encountered on: 

iPhone
iPhone
iPhone
iPhone

Status: 

Fixed

Fixed In: 

iOS 9.1