Sold my iPhone this week and went full Android. I'm amazed at how much better Android is. With the new update to 8.0 and 8.1, it's at a whole different level. Too much to cover here, but I'll say, the dual screen and the ability to watch youtube and move the screen around of videos and the GPS navigation while working on other apps it's something that's just brilliant and was sold on it as soon as I started using it. My iPhone all of a sudden felt light years behind. And anyone saying otherwise has not used an Android 8.0,8.1 to its fullest.
stay far from any operating system made by java. It will be very slow and needs too much memory and the memory managment will be very bad. you will end up with a useless phone. I am talking about android. In the other hand IOS is made by objective C which is very fast and great in memory managment. So as a result ios is always good for you and more secure by far.