I have a S3 that is from T-Mobile and want to use it on my Verizon account. Yes, I am due to upgrades, but I have Unlimited Mobile Hotspot and per Verizon, if I upgrade, I lose that feature..Unless someone knows a way for me to keep Unlimited Mobile hotspot????? Anybody? My phone powers My laptop internet, TV, iPad, so its fair to say I use a lot of Gigs..So, can I use this Tmobile S3 on Verizons network, or is there another way that I can keep my Mobile hotspot, besides buying another phone