So yesterday, the first full day I've had my iPhone 7 Plus, it was getting warm with normal use and the battery barely lasted 5 hours before it reached 5%. I just thought it's a new phone and just thought it was indexing and whatnot. Yesterday I was also having issues with text messages, not iMessages, sending and let getting an error "Not delivered". I tried hard resets, nothing. Airplane mode, nothing. So I read an article that said to reset network settings to fix that, so I did. Ever since I did that, my phone has been performing as I think it should. Right now after I charged it again, 1 hour usage and the battery is at 94%. The phone is not warm whatsoever and texts are going through just fine. Of course I think this has to do with restoring a backup, maybe something was corrupted in that process. Maybe something some of you can try if the battery seems to be under performing.