Is the battery okay?


Had an issue with the battery with my S4 when I first got it as it kept overheating and draining fast. Thankfully I told my provided within the week specified and they sent a new handset instead of having it fixed. Want to know if my phone is okay or if I need to send it back

I'm able to get a full day of use out of my phone and just wondering if this is normal for the S6 or should I be expecting more having gone from a phone which drains within 6hours.

It seem to overheat first day when transferring all my old stuff over but I dont think it has since even though it's in a case now

Any advice appreciated.