I am trying to get my Gmail working on my iPad & iPhone too.
I never used Microsoft Exchange before and must be doing something wrong because it never works. (I can set up my gmail on the iPad & iPhone not using exchange but I want to use the other features of exchange syncing contacts calendar etc) I always get "Cannot Get Mail" "The connection to the server failed" or "password incorrect" "Enter the password for the exchange account "exchange" Which I know it is the correct password.
When setting it up I always use my full Gmail address ending in @gmail.com & password with the server being m.google.com. The setup finishes without any errors but when It checks for email I get those errors.