The past two days sometimes when I make or receive a call, I can hear an echo of my own voice. The other person has also said they hear an echo. Over the past 2-3 weeks, the internet will die randomly. I will have to restart the phone for it to work. I think it's only in 3g and the 3g symbol will go away when it happens. Has anyone had either of these problem and/or know how to fix it?