Both my husband and I have had this problem for the past week or two. We each have several locations on our phones. Sometimes others will work, but our local won't unless we turn off the 4G (well really 3G on AT&T here) and go to wifi. then it works just fine. But back to the 3G, and it's stuck again.
Anyone know what this is about and what can be done? It's kind of annoying.
Oh yes, we both have iPhone 4s. thanks, Peggy