Isn writing messages on a mobile device (like a phone) difficult?
You might be thinking that typing on a miniature telephone keypad is hard, even for nimble little fingers. Well, most devices contain ‘predictive input’, a sort of software that allows the device to guess what you are writing and try to finish the word for you. Besides, most people abbreviate their words anyway. Unless you’re not trying to write a novel on your phone you should have no problems.