i just sold my phone so i dont have one right now to try, but heres a thread from the metro pcs board on how they got messenger workin for them, maybe someone can try it for cricket http://howardforums.com/showthread.php?p=9600391#post9600391
i did... i got windows live messenger working... its awesome i can even send files and receive voice clips... its the best messenger ive seen on a phone ever.. no joke!
windows live maps and search started working as well ...
Yeah, windows live, and almost every other app is working now. Cricket removed their requirements for a proxy server. They are now using a transparent proxy so all of our software that requires inet access should work just fine. I even got my Free World Dialup account working on my phone!!
i had to download phoenix's 3.5 rom for sprint then soft reset and all the aplications worked for me... but when i had the 3.5 clean one nothing worked not even google maps...