When I use the f3b DozenWalk Data field for some reason it will randomly crash or show only the IQ screen anywhere from 10-15 minutes after starting to walk and the Auto Activity to start. Pretty sure it is not a problem with the APP or Data Field. If I manually start the Walk activity it works with no problems and never crashes, or the screen doesn't end up with IQ on the screen after 15 minutes or so. It doesn't seem to matter with Data field I choose any of them, walker, f3b Dozenwalk, etc. the same thing happens, only with the Auto Activity loading up on it's own.