This is a copy and paste from another site and I cannot verify if it is accurate though I think the guy who posted it is realible.
DW_Wood
MagicJack on your smart phone or iPhone
Not sure if everyone knows that you can get MagicJack (VoIP calling) on your smart phone (andorid google play store) or iphone (itunes) for free.
It will allow you to call anywhere in North America for free with no time limits or restrictions. No signing up or credit cards.
I bough MJ Plus today at Walmart and I seen that there was a download for android and iphone so I did the android version and used it all day before actually signing up and using my MJ Plus at home.
This is NOT spam for MagicJack. Just thought I could pass on some savings to my friends here with a good little app.