KE, last December I made the "quantum leap" from a cellphone to a smartphone, the Nokia Lumia 920. I had to because it was necessary to link to my computer in my office to access patient files, write notes in hospital charts, send prescriptions, receive pages while on call, etc.
The nokia Lumia is a Windowsphone which is compatible with the electronic record system used at my hospitals. I like how it syncs with my office computer. I was able to get used to the touchscreen very quickly. But I understand how you feel. I wish I could go on using my cellphone for just telephone call the way I did in the past. Things are changing rapidly and i think you'll enjoy being able to use GPS, email, text and browse the internet, and take pictures with your smartphone. Your SONY smartphone is highly-rated and you should be having fun with it.