Tried XP with IE 7 and Firefox - no go. Tried Ubuntu with Opera and Firefox -no go. Tried Safari on OS 10.4 - worked. Finally have the phone at the 229 corp discount on a one year + 35 activation + 8.99 overnight. You think they can check the website against different browsers. At least I can my horrible Windows POS pharos 619 phone and Tmobiles billing weirdness.