Please elaborate what you were told by them.I even spoke with two agent with Samsung
15 character passwords are supported and you’re obliged to mix up letters, numbers and special characters.
What are Samsung's password requirements? - PasswordPit
Wondering what the minimum and maximum length of a Samsung password is? Here’s an overview of the password requirements.
Also, what model Galaxy are you using? I can't search for a manual until I know the model.
Now my cheap Galaxy, A12, doesn't have all the features of the S models. I haven't tested a 15 character password.