I've had a Galaxy Tab a for about a year now, and I recently went out of town. When I came home and entered the security PIN, it wasn't working and then I realized that I changed it. I tried entering what I remember changing it to, but none worked. Is there a way to bypass the PIN without deleting anything on the tablet?
There should be a way to reset the PIN by using your email. If your device is rooted, there are quite a lot of flashable zips for you to bypass the lockscreen on XDA.