I have developed a facebook application for the web, iPhone, and Blackberry. For the web, I direct users to http:// facebook.com/login.php?api_key=eb5e547ac5534ffc3862bc74017d344d&v=1.0&next=webLogin.php, where they can sign in without issue. That is, if they enter a wrong password and then enter the correct password, they are forwarded to my webLogin.php page with a proper facebook session.
I direct my mobile users to http://m.facebook.com/login.php?api_key=eb5e547ac5534ffc3862bc74017d344d&v=1.0&next=iPhoneLogin.php to sign in. If they enter the correct username/password on the first try, everything works fine. If, however, they first enter the wrong credentials, they will NEVER be able to log in unless they clear their cookies (this seems to work). If they enter an incorrect password and then try to enter the correct password, facebook just reloads the login screen and never forwards them to my iPhoneLogin.php page. Please let me know if you have ANY ideas at all how to fix this or even have any decent insight into what could possibly be going on.
NOTE: feel free to try the links -- this is for the http:// fyndyu.com website.
P.S. Sorry about breaking the links--apparently you can't post more than one link if you're a new user.
Thank you in advance for the help.