The "class" tells you what the data transfer speeds are. The higher you go the better. Class 6 does 6Mbps and class 10 does 10Mbps. Its recommended that you use class 10 if you record HD videos as the data rates are high and you wont have a bottle neck when the camera is trying to save it on to your card. If you never/or rarely do videos class 6 will be fine. Having said that the price between a class 6 and 10 isnt that huge anymore. Class 10 has become the norm. Hope this helps.
Mobi has easier set up using 10 digits code, and instantly transfer photos to mobile or tablet, but not computer, it also dose not connect to home or office wi fi and dose not upload raw photos
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No, but it's extremely easy to transfer photos from your iPhone to your computer. Just plug it in. Both Windows and Mac have built-in software to copy the photos to your PC, and then remove them from the iPhone.
I am using Canon 60D. As an SD, it wirks anywhere but as a wifi? I don't know if it will work or not with the Dash Camera. Try to see their website and contact them if you didn't get a clear answer. Sorry :-)