for last few days my 15 month old iPhone 6 Plus has taken on a life of its own. Once I turn it on (either from sleep or hard restart) it start typing letters on its own and goes into web sites or google search or other apps WITHOUT ME TYPING ANYTHING. I've downloaded the latest release 9.2.1 and it still happens. I took a video of it just so I can show it to Apple Support. I am new to this forum and I want to share that video and hopefully someone can suggest a solution.