I haven’t, but I know some people who have a hard time getting touch-sensitive devices to respond to them. There may be some difference between your hands, for instance if you’ve been doing something with one but not the other – soap, oil, or something that affects the conductivity of your skin or something.

Huh. Well, are you right handed or left handed?

@Dutchess_III Left handed.

That’s what I suspected. Your right hand just isn’t as coordinated as your left unless there is a task you perform (such as typing) that uses both hands equally. If I tried to type in numbers with my left hand on the phone I’d probably mess up too.
Everybody on Fluther running to type on their phone with their non-dominate hand!