There is another method, needing no specific tools. The problem is that the whole phone will be reset so if you have photos or important documents that are not saved on a SD card, or Cloud or something , you will lose all. It works only with all Android OS if you remember your Google account password, If not it works only with Android 6 and above. The simplest is on Samsung because you have 4 buttons.
Here we go:
Shut down the phone
Press the buttons Home+UP volume+Power and hold for 10 seconds
You will get into a menu and there you can reset the memory of your phone.

I'll make a post with all that with photos and all the rest.