Bluetooth problem with iOS5.1.1 on iPhone 4S.
I had my bluetooth headset (Sony MW600) working very well with my iPhone 4s. However, problem happened after upgrade the iOS to 5.1.1. I can listen the music well now but hear nothing when an incoming call comes in. I used to hear the ring tone at my headset but now the music just gone and become silence when the phone call coming.
iPhone 4S, iOS 5.1.1, Bluetooth