So, is using a free hotspot w/unlimited data OK?

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http://forums.androidcentral.com – Wondering if using a free hotspot that turns on the native Verizon hotspot is fine or will Verizon charge me? I have unlimited data, with no share plan therefore it doesn't come with a courteous hotspot. Basically I don't want the hotspot changing my unlimited data plan. I previously used foxfi but after the jellybean update, it started the native Verizon hotspot as well. Didn't want any surprise charges so I stopped using it. It's been a while since browsing the boards so I was just wondering if anyone has continued using an outside hotspot, and whether or not they got extra charges or ra (HowTos)