I am with T-Mobile and whenever I am in Poland it roams to ERA. I've been happy with T-Mobile, but a little concerned with what will happen when AT&T takes over. Perhaps, the deal will be shot down. There are those in America attempting to avoid any one cell phone provider becoming too large.
It's missing a GPS receiver that my older small Nokia has got.
I just recently bought an older smart phone made by Nokia. It still has the old-fashioned keys for texting. It looks and operates a lot like my "dumb Nokia." It has Symbian software, but I believe in the future the viruses will be attacking the Droid phones and IPhones.
What made me get a smart phone from 2008 rather than a new touch screen model is the fact that this Nokia (N82) is considered to have one of the best cell phone cameras. Even compared to newer cameras with more pixels. It has the type of flash on many point and shoot cameras and it has a covered lens. On my recent vacation, I felt happy to have one device that could connect to the Internet without a data plan, and take pretty darned good pictures.
Nokia is cool because it is compatible in the USA and in Europe. No frequency problems. :-)