Hello, my sister recently got a samsung galaxy note 10.1 2014 edition for her birthday and I was using it the other day and I noticed that every time I unlock it an ad pops up. They either pop up as notifications with a "go now" or "no thanks" option or just directly take me to the play store to download an app. I'm wondering if this is normal (as I know the kindle tablet has ads) or is there a way to remove them? They are very annoying. I personally have never had a tablet and she is as clueless as I am. thanks in advance.