I can answer your question. If you already have a data plan you wouldn't see any additional charges. The only time you would see additional charges is if you went over your 2 GB monthly allowance. I'm also concerned about your monthly charges. I would recommend logging on to www.verizonwireless.com/myverizon under my bill choose account analysis. This will help ensure you are on the best plan for your needs.
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I'm happy to help locate the Account Analysis with you! The analysis tool is so fast and easy to help find the right plan! Its featured a couple of different places. The best place I find it is under the 'I Want To...' section, just click 'More Actions', then under PLAN, select 'Run Account Analysis'.
I hope that helps. Let us know if you need further assistance.
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