Seriously, OEMs should stop using the 28nm S650 series.
I get that they are powerful, but they drain batter life like crazy.
Either use S620 series, like S625, or use MTK's Helio P20.
Seriously, we don't need that powerful a SoC, if we want something powerful, we should just use S820 or Helio X20. For Mid Range devices, S625 and Helio P20 makes a lot more sense. They are powerful enough, and offer very good battery life.