… in terms of draining the battery. My iPhone 4S used to last about 24 hours before needing a charge. After the iOS 7 upgrade it lasts from 8 am until about 4 pm.
This reminds me of first-generation Android phones.
Separately, the photography interface on iOS 7 seems to have gotten better for sharing photos. After taking a picture from the Camera app you can touch it and then share it. On the previous versions it was necessary to back out into the “Photos” app before sharing. For taking pictures, however, the interface is worse. There are on-screen controls for the flash, HDR, etc. that make it hard to compose the image (by obscuring the virtual viewfinder). I can’t see any way to hide these controls and look mostly at the image to be captured.
On the iPhone 5, the viewfinder shows the complete picture, unobscured … which is an improvement over iOS 6 … for that device, anyway.
Disable background app refresh for apps you don’t want. This was the key for me
I do get a couple days’ usage out of my Galaxy S4, with the Qualcomm Battery Guru app installed, and unneeded services turned off (e.g. hand gestures and eye tracking functions). So not all Android phones are poor on battery, relatively speaking.
iPhone 4s loaded iOS7. My battery last longer (noticeably). Bluetooth: off. WiFi: on. Other than GPS, nothing else runs in background (i don’t think). No cloud connection. I’m on ATT plan with my daughter. My usage: phone calls, Apple text messages, maps, weather. Not a heavy user. And definitely not a power user. I tap the icon and it works. The power and utility of this device still blows me away. But I’m old.
Mine never did last much more than a day, Since getting an iPad 3G mini I’m using the phone a lot more as a phone and less as a computer so it is lasting a bit longer. The biggest battery killer is spots tracker!!!!!!