I have bought this phone 3 days back and I use this very lightly. I am having a poblem with this when I use internet for few hours my phone gets overheated near the camera side and near the phone speaker side and when I call I hear my own voice. I first thought it is my sim problem but it happen consistently even after replacong it with other sim cards, so it must be a manufacturing issue on the phones hardware. after buying thi I feel very bad since am experiencing this much difficulties that too in the first days of my usage.