I have already inserted simcard.But after sometimes it shows that simcard isn't inserted. And i have to open the sim tray and correct it..What's going on..I don't know  .Please tell me the solution..It put it me into trouble ...because I usually stay...

Now m20 extremely hang..When i open screen lock..it opens after 10 to 20 sec..Also app drawer problem...it is too much laggy..

Amazing Sunset #m20