S7 does not supports S secure feature why??

Is galaxy s7 supports VoLte feature or not..?

Today my device suddenly restarts while i was playing game then it automatically restarts so what's the problem behind it @samsung..??

Yesterday night mera a5 2017 rt ko 11:45 pr mene 80% battery ke sath rkha or temp. thoda thanda tha and wo bhi thanda tha subh to jb mene subh dekha tb uski battery dead thi blkl switch off esa kyo hua h samsung...?? kya prob. aayi h usme..??

can Samsung's a5 2017 will get bixby software later on.