I use text free and it even gives you a free US telephone number that people can call you on, all free. If you call out on the number it is $10 for 500 mins. The texting works outside of US as does the telephone number
I know I am using it with a US California number to text some people, I use it on my iPad and... you can call people on it? really? how? I only thought you could text people on it.