Oppo ColorOS china rom more aggressive (at least for my find n2), by default, every notif for non-chinese apps are OFF, u hv to ciao one by one to On it., plus batt optimisation turn OFF. Even then i On all notif, the batt life are still greater than Samsung. Cos I reckon by ONing all notif means it will be the same as Global rom. Haha
But magicOS no such prob, essentially I did not ciao anything AT ALL for all apps and all notif came In w/o fail, except for some occasional non-pop ups for OCBC authorisation to click 'yes'.
But my V2 is global rom, I also find the batt life exactly same as my CN V3.
I don't game, don't watch shows, jus usual Whatsapp/work email/chrome.