My phone was sitting on the lock screen today and the lock screen disappeared and was replaced by a second lock screen with an ad. This is the stock lockscreen software, and has not been altered in any way. My phone has never done this before, and frankly I am infuriated. I don't care if this is supposed to be some "helpful" local tip, as far as I am concerned it is an intrusive advertisement. The ad covers my entire screen and comes up whenever my lock screen sits for over 2 seconds. Even if this feature is optional, it seems like a massive leap in the wrong direction. I am sure there is some way to disable this, but I couldn't find it in a cursory glance over the settings. If you have any insight, advice, or comments, please let me know.