content: a 4G phone hacked for unlimited data)  Now do you mean you pay for data and hacked it for unlimited tethering or do you mean you hacked into the carrier's network. Because both of those are possible.  Back in 2009-10 i was researching the frequency bands that GSM carriers used and I thought I saw a way to hack into the towers and get free service, but i became pre-occupied with my career for a few years and abandoned all that research. Anyways, about a year into my career i read about 2 guys that managed to do it; there were no details in the article I read about how they did it, but I felt so disappointed that I missed out on that - could have been one of the first. Wouldn't have told anyone either, just would  have kept that secret for myself. Actually I probably would have sold it on the dark net for a price at least double what I think I'd get out of it in the long term.