I bought two Samsung mobiles during the never mind offer period. For the first mobile I got the never mind offer activation confirmation. The 2nd mobile was bought on 17th Oct from Amazon but delivered on 25th Oct as there were holidays in betwn. An...

My fingerprint lock got deleted automatically randomly. it happens every alternate 1 or 2 days. I have set-up my fingerprint lock again n again. please suggest what to do.