Shouldn't the engineering team just make this default and we could just get more battery. If we want to use more battery and we can turn that on with a single switch in old fashion Apple manner? The only thing that keeps me from ditching my iPhone is the Uber app which is available on other phones as well, the rest is better done on a laptop and I could make calls with a dumb phone. Making the transition from a single application like "phone" to having to use a dusin apps and services to contact different people is stupid. Especially since most operators don't charge much for making international calls. I still like the camera / message functionality, but every camera is decent and everybody can send a picture over GSM.
Give me a dumb phone with the Uber app. It automatically turns off everything in this article by default, and you don't have to think about battery.