One of the best benefits of rooting your HTC Evo 3D is that you can get free wifi tethering mobile hotspot without paying the additional $20-30 to Sprint for the same internet access you’ve already paid for.
You can get an “experimental” version of Android WiFi Tethering app to get free wifi tethering.
First, make sure you’ve perma-temp rooted your HTC Evo 3D.
Second, download the experimental version here: (Important, only this version works
