CLIPBOARD

How do you lock things in your clipboard?

Posted via the Android Central App
You may not be able to do this with the stock clipboard. However, you can download a third-party keyboard from the play store and have more functionality with the items you are clipping/copying.
 
You should be able to highlight or long oress what you want to copy to the clipboard and a menu will pop up asking to copy to clipboard.

It should stay on clipboard until you manually delete it. I delete it by going into messages and selecting the tools button and then clipboard... from there you can delete all.

Sent with my white Note5 with nonremovable back and no SDcard!