I'm having an issue that when I leave an area that I'm using Wi-Fi, my phone automatically drops to 3G and won't go back to 4G until I flip to Airplane Mode and back. Also, my 4G randomly dips out to EDGE service (1x) and doesn't come back until I go to Airplane Mode as well. Now I know the issue isn't not having 4G because I've tested while my wife is sitting next to me and she'll always have 4G, no issues. Anyone have any suggestions?