I rarely text while driving and walking, but people are going to do it anyway. We have a nice phone stand in the car that helps with focusing on the road. With that in mind:
It's much easier to text while walking and driving if you're using Swype or Swiftkey. Not having that software available to Apple phones (because of their restrictions) is the main reason I switched to Android. Now that it's
available in iOS devices, I'll consider going back to Apple in a year or two.
I don't know how people use their phones without keyboard swiping technology. It's so efficient.