"Phone" App draining battery

Hello, the phone app is draining all the battery from my Xperia Z3 Compact, always use about 20% ++ battery (more than the screen), also the phone is always awake, I'm non-rooted so I can't control wakelocks, is there anything I can do to prevent this?

I tried a factory reset and it's happening the same issue, should I root my phone and try to block system apps?

Thank you.