I recently started having complete silence when making and receiving calls. It connects fine and then it will be silent and people say that can't hear me and I can't hear them. The only way I have found to fix it is by rebooting and even then it only works for the first call or so and then goes silent again. I had the problem with the previous version of MIUI as well, and did complete wipes before installing both. Anyone know what it could be and how I can fix it?