[ZTE Axon 7 Guides, News, & Discussion] rogermorse:
I've had the phone since the beginning of December. Right since then, I have had battery drain no matter what. In the first days I experienced it even overnight, I am pretty sure with airplane mode activated....

Later on, I wiped the cache from the recovery mode, didn't fix it. I used that 'GService fix' kind of magical app that everybody said it fixed their problems...it didn't fix mine. I performed a hard reset and I did not restore the google account apps, instead I manually downloaded only the apps that I really needed.

There is no apparent pattern on when the battery drain starts: I would find my phone hot and very rapidly discharging (if not already discharged), battery temp hot and cpu temp hot. I disabled all google now functions, I disabled GPS, at first I disabled only some google functions (kept only google keep, calendar and contacts on automatic sync)....but then a couple days ago I disabled the whole automatic sync. Battery still drained without using the phone.

I had read that one reason why google service would take so much battery would be having multiple accounts, or having some problems related with google play games and its sync. I do have games installed on my phone, and they require google play games to work, so that one is installed on the device but I also read that 'people details' under google account settings is relevant to the google play games sync. And in any case as I already said, the whole automatic sync has been disabled in the past 2 days, yet today the phone drained the battery while in my pocket.

I cannot understand what is going on. I am using GSAM to try to monitor things, but till now I have only been able to understand when was the battery drain starting and when was it stopping. I never found the reason. If I choose 'since screen off' on GSAM, I can see that it is again google play services taking most of the battery.

I can see with those softwares (3c toolbox, GSAM) some things, many of them I don't understand and some of them I don't even know how to set. It's pretty useless to know that suddenly my cpu goes high in clock and keeps 90/100% load if I don't know why. There is no rogue app, otherwise it would show on top, right? I can provide these two screenshots:

http://i.imgur.com/wPgGlu7.jpg

http://i.imgur.com/9hbVG0I.jpg

First screenshot: I had the phone on my desk since 2 days or so. Wifi on, no gps, no sync. I went out around 12:00 and that seems to be exactly the time when the battery drain started. If I choose in GSAM 'since screen off', google services is on top of the list. Unfortunately this cannot be very much relate with mobile data or so, because I have experienced battery drain even with airplane mode or at home with wifi enabled. Second screenshot: I don't know what to make of those packages......

I know that other people with the Axon 7 had the same problem, I googled a lot, didn't solve anything.....and I also know that anyway on any phone this can happen. I had very randomly the same problem on the Nexus 5 but never gave it too much attention because it wasn't too bothering, it was happening every once in a while, but with this Axon 7 I am touching it every 10 minutes to see if it's burning hot or not, constantly afraid to take it out of the pocket and find it with 10% left of battery.....