I rarely sent texts with my old phone, but like Jilly, I do much more with my iPhone. I consider my iPhone a handheld computer and that's why I bought it. I am often away from my office for much of the day and carrying a laptop got to be a hassle, especially with travel when I really just wanted it to check email, etc. Plus, the iPhone was the best "deal" -- I was all ready to get a Blackberry but they were way more expensive.
So, now, I can check my email from most anywhere and I also have my social media apps for Facebook, Twitter and LinkedIn on my phone. When my power went out last night, that was a cool thing to have!
I don't do mobile banking -- mostly because I read the fine print & my bank offers it free, but there's verbage in there that says I agree to pay essentially whatever they decide to charge. So, I don't want it. Online banking from my laptop or desk computer is fine for me. I can still, on the iPhone, go into their site just like on any other computer and move money if I need to.
I don't have a GPS in my car & I love that I can use the iPhone as a GPS--it finds where I am & draws a map to where I need to go! For free! LOL
I know I sound like a sales rep, but it really has made things much easier for me. And, I am pretty good at typing on it now, but it took some getting used to.