Just the classic phone ring sound for me. Not very original, but I can hear it vs other noise.
Also not a texter at all, my usual reply to a text is to call the person back. After all it is a telephone!
If it's a smart phone it's not just a phone. It's a answering machine, calculator, run tracker, calorie tracker, music player, internet access, email, scanner, calendar, camera and on and on. I'm always in awe.