WP is MUCH better for creating groups
Adding someone to a group is like getting a colonoscopy without being put out. MY GOD WHAT A PAIN IN THE ***.
WP is so much better from this perspective. I'm heading out next weekend to a bike race, and I need to put all of the people going into a group.
I did this in April on the Lumia and it was seamless. I am very tempted to fall off the wagon and take the Lumia next weekend.
I really like the 4s, but honestly, why is it such a pain in the *** to do something as create a group and add people to it without needing a computer???