Hi everybody. My hand phone's Xperia J ST26i, up to ver 4.1.2 of Android. In ver 4.0.4, when i receive a call, my hand phone light vibrate, so i can know that my call connected. But, in ver 4.1.2, it's not working. So, how to get vibrate when connect call? Pls help me, change in my hand phone or...