My Plantronics bluetooth Discovery 975 will not connect to my iPhone 4s, after having powered down my phone and turning it back on this afternoon. It was connected before poweirdown, and now while going through the reconnect process, it shows the xxplantronics, searches for it, but will not connect, saying to ensure bluetooth is powered on, charged, and within range, check check and check. Help! Frustrating, since I've not had the problem before powering down this afternoon and the bluetooth isn't new. I tried the Airplane Mode power on and off several times, as suggested in another post, but it didn't work.