Last Saturday my sister bought LG lollipop it was working fine till yesterday but today morning when she was unlocking it to make a call it only says Emergency Calls only so I put my T-Mobile SIM card it works perfectly fine she bought it from flip kart. Does anyone have idea that what can be issue and how she can fix it please help, every time I can’t give her my phone? Suggest me friends so that I can fix it soon.