I find typing short-hand harder on the iPhone and typing long-hand easier because to do short hand I would have to keep changing between numeric and alphabetic keyboard and Caps Lock.
Well, I use "the basics" when it comes to shorthand. I use LOL, BRB the occasional BBIAF, etc. I don't (or very rarely) use YMMV, IANAL, IDK, etc. That goes for both my typing on a computer or on my iPhone.![]()
I text in proper English without abbreviations, unless it's a long text and I'm worried about surpassing the character limit (my husband doesn't like it when my messages to him get split up). Then, I'll use "u" for you and "TTYL" and a few other abbreviations.