Hi, I downloaded the latest version of facebook from the apps store on my iphone4. when i try to log on it opens it up in a safari window and not the application itself, which means i can't use chat or update status or wall posts via iphone. i tried to delete it and reinstall, i even did a restore and downloaded the app again- same issue! however when my brother logs into my phone it opens his up using the application and when i log back in same deal- uses safari. how do i fix this? i've tried calling apple, and have submitted a report to facebook but have gotten NO feedback! any suggestions would be appreciated!