Carrier branded devices usually have Tethering and Hotspots disabled and you can activate them by purchasing a special contract, so of course by paying more money. Luckily, developers are always finding ways to override these restrictions and enable the options for free. This following method that I'm going to present to you requires NO ROOT, which is a great advantage because many people are afraid not to break their device by rooting them.
How to enable Hotspot and Tethering on AT&T Galaxy S4:
All you need to do is to visit Google Play and download ES File Explorer File Manager. There is no root permission required. Just install the app and then run it. Go to Menu > Tool > Net Manager and turn on Tethering. That's it, as simple as that.
The method will probably work on other Carrier branded versions, not only the AT&T one, so if you decide to give it a try, please let us know :).
Carrier branded devices usually have Tethering and Hotspots disabled and you can activate them by purchasing a special contract, so of course by paying more money. Luckily, developers are always finding ways to override these restrictions and enable the options for free. This following method that I'm going to present to you requires NO ROOT, which is a great advantage because many people are afraid not to break their device by rooting them.
How to enable Hotspot and Tethering on AT&T Galaxy S4:
All you need to do is to visit Google Play and download ES File Explorer File Manager. There is no root permission required. Just install the app and then run it. Go to Menu > Tool > Net Manager and turn on Tethering. That's it, as simple as that.
The method will probably work on other Carrier branded versions, not only the AT&T one, so if you decide to give it a try, please let us know :). 
What's my model number?
There are several ways to locate your model number:
- Option 1
- On your device, go to Settings, then "About device" and scroll down to "Model number"
- Option 2
- Often times you can view the model number inside the device, by removing the battery
- Option 3
- Using Samsung's model/serial number location tool