Siri isn't exactly the most loved feature of the iPhone among many users. She/he sometimes doesn't hear you correctly, and often infuriates users who try to use Siri and end up disabling it altogether. Now here is where 3D Touch comes in. It wasn't included in the iPhone SE, so we still don't know if it's because Apple intends to phase it out in the future, or if the iPhone SE was meant to be an inferior model to the 6S and 6S+ 3D touch enables a serious flaw present in iOS 9.3.1 on the iPhones 6S and 6S+ that lets anybody who can get their hands on your iPhone to access your contacts...
Source: http://www.gsmarena.com/sirilock_screen_flaw_leaves_your_contacts_and_photos_vulnerable_-news-17633.php
