Smartphone SIM cards

Planning a trip Great Western 21 day Adventure. We plan on using a smartphone on the trip which will provide the following functions :-
1. Satnav (Im happy with Google Maps Navigation and also have a copy of Sygic wwhich I can highly recommend.
2. Time lapse recording - Using Lapse It Pro to record the car journey and some scenery stuff (sunset / sunrise).
3. General photo and video recording of the adventure. (geo tagging)
4. Local info / web search and staying connected to RTA of course.
5. Calling hotels / restaurants and fingers crossed emergency calls (no international or inbound expected).

Id like to upload any videos / pics we take to a blog/facebook/twitter. Any video files will be uploaded overnight, we will have a laptop too as a backupo for all files and keep the smartphone freed up. So as you can see staying connected will be important.

I have the Smartphone which is unlocked so can connect to any network (not 4g but im sure an upgrade will come before the trip), what I need is a SIM card that provides plenty of data So far the only site that looks up to this is ulysse's mobile unlimited . Anyone had any experience with them or have a better idea?

Thanks

Looks a bit expensive, but we don't have anything equivalent here. AT&T and T-Mobile are our only 2 carriers that use a SIM, and neither one has any kind of unlimited talk/text/data plan.

You need to clarify what networks you will be using - AT&T's voice/data coverage is pretty decent, but T-Mobile's is pretty bad when you get away from cities and major highways.

mmm I will see which network they provide the sim for.

There is a similar plan available in Oz. A few years ago I investigated it, but way, way out of my budget.

You'd be better off getting a prepaid sim over in the US, even though it may not serve all your needs. A traveller from Oz, whom I met in AK, had his own (smart?) phone, a prepaid plan, can't recall how much, but he had voice, text and web through, I think it was T-Mobile. He was very happy, even updating his blog with photos. And if I recall correctly, he also used it as his gps.

He found it worked well, except in the most remote areas of AK. All through Canada, WY/CO and west of there in the US he did not have a problem.

Lifey