Where do I enter the activation code? 6290-5211-3457-4818

type it in youtube they will show how to bypass activation code

Make sure Capslock is not on when entering the code and try again.

how about returning it to its owner? if not, then call tech support

reset by sending a new link to your email entered when you activated the phone. it should send you a code and enter it on your phone.

You should call the mobile network provider, to get the PUK code. Or, if you still have the original packaging of the sim card, you'll find the code there.The PUK code is a security code, active after 3 unlucky attempts to log on using the pin code.

Just opened with this URL: http://www.pbs.org/activate

Enter the code in the box that says Activation Code, and hit continue.

Hi
If you are being blocked then it is likely that you are not entering the login details that Facebook is expecting, whether they have been satisfactory in the past or not.You could try this, go to the login page here:,
Facebook
just under where you input your password you can click on "forgotten password". This takes you to a page where it says "find my account" where you can enter "Email, Phone, Username or Full Name". Try entering one of these (My email gave the best result for me) and follow through the instructions to reset your password so that you can access your account.
If this does not work there are a number of options here depending upon what you have lost, ie you can't log in, your facebook page has been locked and you can't change it, or it no longer appears to exist. I could go through them all but it has already been done here:
How To Recover Your Facebook Account When You Can No Longer Log In
It details the methods you can try depending upon the exact circumstances.
Hope this is helpful, if so would you please register that with Fixya
Cheers

java not enabled?

Give avanquest an email and ask them