I have a ATT phone and the hotspot function enabled. Up to 5 or 6 can log on to the phone wifi. There was great signal in STT and on the North side of STJ.

I did use the phone as a hotspot once this last trip and it worked great. If you use ATT you may want to check to see how much they would charge to enable on your phone. They may have a 30 day trial thing or something. I need mine for work, but it has come in handy for personal use also.