You might not like the idea but Windows Mobile is reasonably well represented as a phone platform and that gives you a reasonable choice of languages (probably)

You might not like the idea but Windows Mobile is reasonably well represented as a phone platform and that gives you a reasonable choice of languages (probably) targeting the .NET Framework - certainly C# and Visual Basic. At least that would be a well documented and feature rich platform (although it does have it's lumps and bumps). Attractive though Android is there is no shipping phone and thus a zero market (at the moment anyway) [We have developed an Android app but it's sitting on the shelf while we wait and see what happens].