In this video i will show you how to WIFI Tether with your AT&T Samsung Galaxy S4. For this method you don”t need root and you will not have to change any files too.
ES File Explorer: https://play.google.com/store/apps/details?id=com.estrongs.android.pop&feature=nav_result#?t=W251bGwsMSwxLDMsImNvbS5lc3Ryb25ncy5hbmRyb2lkLnBvcCJd
Phone Tech Kid 
Can anyone tell me if this method works for tethering it too?
http://draalin.com/how-to-tether-your-samsung-galaxy-s4/
I’m trying to do it wired through usb, but it doesn’t even show up in my network settings…
Any fixes for me updates?