Sorry, I know I messed some stuff up in Ver3 and Ver4. I have never had those issues. All I can really tell you is, it may be Ver4, it may be an app, or it could even be a hardware issue with these phones. I saw a post about four square making the phone reboot if wifi is not set to on all the time, and other than that I found that some apps use a call for last location and will not work until there has been a lock established through maps or some other app. Sorry I can't help more, if more people have these issues it will be easier to narrow down and figure out. Thanks for the feedback.