I have all converted to google dialer contact cal calc everything I had on battery 24 hrs and it only used 16% screen was at like 18-20% at close to a half hr give or take a few min screen on time and I was in a place most the day was cutting from no service to roam to 3g and to lte all while was at work my battery was at about 78% from full charge 24 hrs ago so I don't think I have seen this problem now u could try a clean install of a ROM and it may be all u need a good full wipe



Edited

I also for got to say I also use Naptime it help a bunch as far as battery and making things in deep sleep so help with drail on battery