So, which is the current mobile operating system that is secure?
All have benefits and drawbacks.
Currently Windows Phone seems to be the hardest nut to crack.
Blackberry has a long history of being very security-focused.
If I have physical access to the gear, I find Androids usually the easiest target.
Then comes iPhone, then older versions of BlackBerry.
A smartphone running Windows Phone 8 or newer, too would be a good choice.
source: www.techworm.net