Step 1. Connect your Samsung S8 to your computer
Please download and install dr.fone toolkit for Android to your computer. Then, run it and click on "Lock Screen Removal" from all the tools.
Prepare a USB line and use it to connect your Samsung S8 to the computer. When the program recognizes your Samsung S8, click "Start".
Step 2. Enter into Download Mode
Before unlocking, your Samsung S8 needs to enter the download mode. Please operate according to the tutorial.
1.Power off the phone.
2.Press and hold Volume Down + Home button + Power button at the same time.
3.Press the Volume Up to enter Download Mode.
Step 3. Download recovery package
After you get your Samsung S8 into the download mode, it will begin downloading recovery package. Just wait until it's completed.
Step 4. Remove Samsung S8 lock screen without losing data
When the recovery package downloading is complete, you can see that the program will begin to remove the screen lock. Please do not worry; the program will not delete the phone settings and data. When the whole process is over, you are free to access your Samsung S8 without any Passcode.
How to Unlock Android Lock Screen Without Passwords