If you're left-handed, you know the world is designed for your right-handed peers. Sure, every once in a while a designer will throw you a bone, whether it's a left-handed toothbrush, scissors or a butter knife. But those bones have been all too infrequent.
So, for lefties, smartphones have been a pleasant refuge where the playing field is evened out. Your smartphone apps are splayed out in such a way that they're as easily accessed from your left thumb as your right thumb.
Except smartphones also sometimes let left-handed people down. Case in point, Apple's new iPhone 6s and 6s Plus with Apple's new iOS 9 operating system. They've got some left-handed Apple users fuming.
A few of the smartphones' features are definitely better suited to right-handed people than lefties. Among the most-complained about functions is closing apps, which now requires a right swipe, where iOS 8 used an upward swipe.