- both phones running RunKeeper 2.5.2.12 (pre-release testing version)
- both phones started activity with location services on (obviously), wifi on, and cellular data on
- halfway through run, turned off wifi on VZW iPhone 4S (based on the oft-mentioned possibility that having wifi on interferes with accurate GPS resolution)
- AT&T iPhone 4: 6.37 miles, http://runkeeper.com/user/delfuego/activity/91886557; map track is straight, with little variance from the actual route that I ran
- VZW iPhone 4S: 6.58 miles, http://runkeeper.com/user/delfuego/activity/91886539; map track is notably more crooked and varied, and at times doubles back on itself inexplicably