Great once set up but...,
Verified Purchase(What is this?)
This review is from: Huawei E5331 High Speed 3G 21.1Mbps Mi-Fi Unlocked Modem (Electronics)
You need to buy a different sim < or so I was lead to believe > , one which is already 3G data ready. Three does have amazing coverage , except in the basement of my office , but on journeys this device is brilliant. Longer life after full charge or thunderbolt adaptor would have been a good idea, but I guess if you buy safely, you can get a converter.
It's surprisingly fast, light weight yet doesn't feel cheap. It does what it says on the tin and does it well - just make sure you read everything and you have the right SIM card with data set up. Getting the unlocked one of course allows you to choose the provider. I find O2 and 3 to be the best but it will be different across the country.
I guess it's really if you didn't buy an ipad with wifi and a sim . Great idea though and saves you money , which you can also keep track of minutes left and cost . You do of course still have the option of tethering your iPhone and using hotspots but I have never found that option terribly consistent.
Overall good stuff, just a tad expensive for what it is .