Hi guys, I'm interested in getting a pocket wifi device so that I can use multiple devices while out and about but not really sure how they work...

I have a vodem, K4203 with a 2GB plan, and was looking at buying this (or similar): http://www.ebay.com/itm/Brand-New-HUAWEI-R208-3G-NEXT-G-Pocket-Wifi-EXTREME-Modem-Unlocked-2-Y-WARRANTY-/151092173275

I think I would just be able to pull the sim card out of the vodem, put it in the R208 and be good to go with 3G data on up to 10 devices at a time?

If that's true is there anything I should be aware of when buying one of these devices? Was planning on not getting one from the vodafone store directly due to cost reasons, but if I buy anything called a R208 it will work?

Thanks!