My S4 is now useless as a smartphone -- mobile data on/off intentionally disabled (no 3rd party apps now work without root access) and not even an icon to display if it's on or off. It takes five (5) menu steps to turn it on and then five (5) more menu steps to turn it off -- that's 10 menus to navigate just to check the traffic unless you have WiFi access. Looks like the goal is to force people to pay data overage charges or force people to a pay for a higher data plan that is either always on or always off. Either way, don't think I'll ever buy another Samsung unless this is fixed ASAP nor another Android device since mobile data will drive the cost up to the point it's just a rip-off. When the word gets out to potential Samsung buyers (and it's already started) that you've done your best to insure people can not toggle mobile data on or off, I'm pretty sure many, many potential user will look elsewhere. Lots of luck getting folks to upgrade to another Samsung.