After the verizon release in early oct, my Foxfi stopped working on my verizon s4. It gave me the dreaded " Verizon wants it's $20/month for tethering" message. Then with the JB 4.3 release it appears to be working again without a USB or BT tether. It made be jump thru some hoops like establishing a lock screen pin (don't use) and off it went. Prelim testing on a few devices proved it was recognized and working. I then removed the lock screen security to "none" and it still worked.