I have restored my iphone after I had trouble installing iswitcher. I have unlocked and activated the phone and have installed installer app and some apps but now...you tube is not working.

Also when I access my yahoo mail it gives me a message: username or password for"imap.apple.mail.yahoo.com is incorrect.

I still have 1.0.2 version and used any sim to unlock it.

Please Help.......Thanks!