I do not know the password and so cannot use the phone
I do not know the password and so cannot use the phone
Go back to the person you bought it from and have him unlock it. He/she should remember the password.
Enter the "wrong" password 10 times.
On the tenth attempt it will security wipe the 8700 and return it to an out of the box condition, then you can get into it and set it up to your liking.
I must ask, however, where did you get this phone?
A legit seller would have either provided you with the password or already had it wiped.
In the condition it is now, you have no way of knowing if the device has been blacklisted from being reported stolen or lost.