Q: how many days does it takes to unlock after receiving approval from at&t that your phone will be unlock..

When it is unlocked, then AT&T will send you  instructions to complete the unlock - which includes restoring as new.

You need to connect the phone to iTunes and use the Restore iPhone button in iTunes. If the phone is unlocked when the restore completes you should see a message in iTunes saying that the phone is unlocked. It usually takes several days after you receive the message from AT&T for Apple to update their activation database.

You restored your iphone as new?

Try again, a day later. When I unlocked my 4S it was 5 days after I got the message from AT&T before the unlock went through. And you must use Restore iPhone, not Restore Backup.

update the phone is still locked...almist 7 days waiting after an emailed approval

Call Apple support. They can check the lock status of your phone.

how sir ?

http://support.apple.com/kb/HE57