Just wondering if anyone else has experienced this issue. It seems like since the latest Find My Friends update, a friend of mine's iPhone 4S won't update his location in the background. When I open the app, his location only updates if he opens the app. All my other friends on the app who have iPhone 5s, their location updates in the background and I can see their location. His is the only phone that doesn't background update. Location services are on, background updating for that app is set to on. We're both running the latest iOS 7 beta. We've signed him out and back in, no good. Anyone else experiencing this on a 4S?