If your WiFi is ON and you tether....it works. If you are on 3g or 4g only....my tether did NOT work with 2.1 (I don't pay for hotspot) I haven't installed group yet...so I dunno about that. Now....why is need to tether if I have WiFi is beyond me....I spose that is why they allow it. I know for a fact that there will be no free tether or hotbot with print and froyo so don't bother dreaming.