totally crap. you cant use both sims at the same time?? so why i should buy this crap install some apps play around with that if i just can change the sims and it has the same effect?? epic fail....
users may want to use 2 plans, 1 cheap voice only plan and 1 purely for mobile internet sim that may have no voice capability like a plan that runs for laptop modems. A user can stay on voice until they want to use the net then they can swap and then back again after they looked up whatever they need to on the net. Of course you can swap the sims by hand but do you want to do this everytime you swap plans ? the only thing thats epically failed is between your keyboard and your chair