Hi. Welcome to justanswer.
Do you have a Samsung account set up in your phone?
I know. That's why I am trying to solve the issue. If you have a Samsung Account then your tab can be unlocked in few seconds. If not then you will need to reset the device to access it. Let me know so that we can proceed.
Then you will need to reset the tab
Turn off your tab
Are you able to follow the above steps?
Do you have any other query?
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What is being shown in the screen?
Did you enter the password?
Okay great. Have a wonderful evening.