If you forgot your password, pattern drill, how to unlock Samsung Galaxy phone without passcode, and without losing any data?

To bypass the lock screen on Samsung Galaxy phone without losing data, what you need is just the Samsung Lock Screen Removal, which can be applied to many cases, including but not limited to:

Passwords are forgotten when a Samsung phone has been left untouched for a long time.
Screen patterns are changed by someone by mismake.
Your Samsung is locked when one has tried to figure out the right password.
A second-hand Samsung phone is locked with a fingerprint of the previous owner.

And to mention unlock software, I'd like to introduce dr.fone toolkit - Android Lock Screen Removal. It is a safe and convenient software.

How to Turn Off Screen Lock on Samsung Galaxy