How can I get back into my locked Android phone?

Episode 1209 (13:36)

Barry from Tustin, CA
Samsung Galaxy Note 4

Barry is locked out of his Samsung Galaxy Note 4, and doesn't have a backup. What can he do? Leo says that if Barry had enabled the Android Device Manager, he can change his device's password remotely, along with a host of other security features. That's really his Hail Mary. If that doesn't work, then a factory reset may be his only option.