I recently bought a Tmobile 4G Mobile Hotspot. The TMobile dude said if I have an Android phone I can route all my calls via the Tmobile 4G Mobile Hotspot. This would be great as I can move down from my 40 USD a month Virgin Mobile plan and apply the 20 in savings toward my 30 USD a month plan mobile broadband plan with T-Mobile. I have 3 questions. 1-How do I set this up on the LG Optimus V 2-How does my Olympus V know to route the phone calls to my T-Mobile Hotspot and let the T-Mobile network make the call 3-Why would T-Mobile allow this as wouldn't a lot of people buy the hotspot to direct there calls and save themselves a lot of money by buying a cheap rate plan with there carrier ?