Z5 Compact running hot?

[VAV17]

I have bought the new Sony Xperia z on last week. The device become hot when I shoot videos. And also the battery charge get reduced within few hours 

[milad_sn]

hi

i have xperia z5 dual

i dont know why now it is  now very hot

Temperature is over 80 !!! 

i do format and delete all files 

use ice  but it yet  hot  

in standby t=43 C

when i use on  program  or more  t=63 C  and higher (83 C)

i dont know what happened.