Are there any true "unlimited data" 4G Cellphone Data Plans? Or are there any major savings for people who use 4GLTE to send very large files frequently and need a lot of data? http://www.bluefirebroadband.com/plans advertises Unlimited 4G $125/month 6 Mbps Download 3 Mbps Upload but I haven't gotten a response back from them yet. Other outfits which advertise "unlimited" on TV use unlimited to mean you won't be billed for overages but either 1.) your service will be slowed down to "2G" speed which I think would be unusable for me, or 2.) it just gets cut off entirely which would be really bad for me if I was trying to transfer a final file while away.