Try to reset the bluetooth. I had the same problem. At first it was working ok but since i`ve paired it with two devices your problem appeared. After restarting the settings of SBH50 it`s ok.
hardware: Samsung Galaxy S4 i9505 16GB black mist + 32GB mSD Adata UF1
software: Omega v11 Rom, Ausdim v17.1 [Kernel]
hardware: Samsung Galaxy SII 16GB ROM + 16GB mSD Adata + Extended Battery Pack 2100mAh + two backup batteries + mHL + screenprotection + rubbershield
software: - Omega 19.2 4.1.2 JB + PhilZ kernel