i was not rooted the first months of using the phone and got between 4-5:30 hrs of SOT. Id recommend buying the 10 if youre able or a S7 edge. The battery life on the M9 is average - good, but other phones are better.
If you plan on rooting the phone, youre almost 100% sure of getting between 4-5 hrs of SOT with the correct tweaks like greenify, naptime and some kernel tweaks. All this w/o losing any performance. Right now im at 84% left with 1,20 hrs of SoT.
Well, ive tried the fast charger on my s3, and i gotta say that it charges faster compared to my old charger. Well it even charges faster than the original S3 charger. Thats my experience, but try for yourself
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