Every time this show on my phone....My mobile sot 4:30 i used this phone only 6 month,,, my phone is under warranty.what should i do. 

After update security patch November 1. I cant add my new fingerprint security. Why this is happenin? God swear i will never buy any Samsung phone anymore        

What should i do now?....i buy this phone from Bangladesh IT'S official phone.after using 15 days i fell something wrong in power buttocks switch then i take it to customer service care of Samsung they solve the problem they said they change my mothe...