I was using Foxfi to Hotspot my Verizon Grandfathered UDP .... I Just got the Galaxy S8+ and found out the hard way that Google(nougat), Samsung and Verizon teamed up to kill Foxfi's Hotspot hack. Until we have an unlocked boatloader. root or another working exploit, Hotspot isnt going to work on the Galaxy S8..The good news is I was able to find a decent workaround with an app called "Net Share-no-root-tethering" from the play store... It uses Wifi-Direct to share your phones data plan.. It does the trick and I'm able to share my data plan with other wireless devices.. I was literally just about to return my S8+ rather than wait weeks or months for the devs to crack the vault.. Hope this helps ease the tetherless pain while we wait for a new exploit ..Edit: Please note this is not an equal substitute for native Hotspot.. I found the speeds to be much slower, but for basic internet use like checking email, and web surfing the connection was adequate.