I am using moto g3 3 rd gen from 6 months back.i am facing one problem.the phone number list automatically deleting.i am keeping the phone numbers from my memmory card so again and again I am reinstalling the numbers .i upgrade lollipop to mashmallo.anybody tell whats the problem?hardware or software?The best mobile Moto G3 I used somany but this one is the besttttttttttttttttttttttttttttttttttttt