Ironically, it was apps running in the background that caused my colleague's android smartphone's battery to run dry within a short period of time.I used multi-tasking as an example, the Android OS has a lot more going on in the background than iOS. I would also disagree that multi-tasking is the same, how many apps can you have on iOS actually running at the same time without going into a suspended state when you leave the app? I believe it's just 1, correct? With Android you can have many apps actually running at 100% in the background, collecting data, progressing, etc even if they aren't the front app. Now you also have split screen capabilities to have two apps side by side.
Seems like the ability for apps to continue running in the background can be quite the double-edged sword.