Some phone doesn't support opening docs file (word, excel, powerpoint) but these files is become more important these days. Many people try to change their handsets, others, os-based-handsets smiling happily because their handsets have application in the first but, so they don't confuse to think that thing.

So, how about anyone who will read those, but his/her devices doesn't support. That's not a big problem anyway as Google launch Google Docs for mobile. Now you can freely read your documents in your mobile phone, as easy as you go to http://m.google.com/docs. Being free to read documents on the go!!