[One (M8) General] @rbiter:
if you used auto brightness that is decent. using auto, which is a little aggressive can drain your battery quick as it is too aggressive. I try to stay on lowest brightness as much as I can and the manually/auto when extra brightness is needed. try to manual more than auto when in sunlight conditions but sometimes you need auto for a little extra brightness.

it was driving me crazy I was only.gettimg 4-5h sot and I had no serious wakelocks would have about 4.5h sot ±20mins over 8-10h using auto and about 10% battery left. I started using manual more at lowest brightness and adjusting accordingly when I went out and I was getting ~4h sot in the same time frame with about 50% ±5% left. seems my phone could easily get 7-8h easily if left on lowest manual or a couple notches higher.

the display brightness is the biggest factor on this phone bar none. auto is set too aggressive so if you want extra screen time download an xposed module that allows brightness slider in pull down bar. my 3.5-4.5 sot went up from running the battery down to about 10% at that rate in 8-10h in that timeframe. now using lowest brightness and upping about 15-20% accordingly on slider in brighter conditions I get the same 3.5-4.5h sot and having 50% ±5 left. only use auto and higher slide scale when I am outside smoking and sun is high in the sky briefly.

I am going to look at kernels that might possibly have a better auto brightness scale because lux is a little more cumbersome than my previous mentioned method but you should easily be able to get 6h sot. I am being conservative with that estimate because I think most most should be able to get 7h+ if you're willing to sacrifice stock auto. 8h+ should be feasible depending on chip binning and use of WiFi or LTE and having good signal with either.

like I said I truly think 6h+ is easy if you're willing to sacrifice auto brightness but you can still leave Bluetooth, NFC and auto sync on. (and maybe turn off mobile data when using WiFi). the 7h+ sot should be a lot more feasible if you're willing to toggle NFC, Bluetooth and mobile data more often to maximize potential.

this is my preliminary findings as i've only had the phone a week. my first day I got almost 5h sot but I dl'ed over 8gb of data the first day installing apps at work so that was awesome. I thought I was having wakelock issue after that because the next few days still using auto I was still getting same stats but I was going outside more often and used a lot less data. managing display brightness is key. my wakelocks percentage aside from the first day of ~13% has always been 5% or less. my screen is freaking awesome with no dead pixels, great contrast and blacks and no backlight bleed so I am hesitant on returning on taking chance of getting display that is lesser and losing 50$ restock fee. I feel robbed not having the other extra LTE bands needed for atnt but returning and buying unlocked will end up costing me almost $800 to have those extra two bands and it is not worth it. plus I could get a less than perfect display, already have s-off and.plan on staying with mobile probably about another year. and my phone will get repurposed as a DAP when I move on because the audio quality is freaking awesome on this phone. I am also eager to convert to gpe when android L comes along. I am sticking with sense because it's not shabby and less cumbersome tweaking than touchwiz.

sent from my HTC M8 using hofo app

---------- Post added at 08:33 AM ---------- Previous post was at 08:27 AM ----------

wrong. it is display brightness. then signal strength. display brightness can suck your battery a lot quicker than a low signal.

sent from my HTC M8 using hofo app