Your iPhone has a lot of hidden features you may not know about, like the ability to make custom vibrations and the ability to let you control your screen by tilting your head. We've rounded together 5 hidden features that will help make you an iPhone power user. Tech Insider tells you all you need to know about tech: gadgets, how-to's, gaming, science, digital culture, and more. Subscribe to our channel and visit us at: http://www.businessinsider.com/sai TI on Facebook: https://www.facebook.com/techinsider TI on Instagram: https://www.instagram.com/tech_insider/ TI on Twitter: https://twitter.com/techinsider