I upgraded the os on my Samsung Galaxy SII and had some challenges, however the tech team for Sprint where I go fixed them all except my e-mail. Here is what is going on. I now can receive mail but not send. I have set the account up on another phone excactly like mine and same thing. What is strange is that it did send for about 6 hours after the upgrade and again a few days later it sent for about 48 hours and now nothing. Any ideas?