I dont know if this problem has been posted but, when my phone is locked and then someone calls me. I can't access the address book, or unlock the phone. This only happens if my phone is locked.

You should be able to unlock the device, but it is not required to answer the phone. The address book is not accessible by design. If you lost your device do you really want someone who found it to have all the contact information for everyone one in your address book?