The best iPhones, including the new iPhone 15 Pro Max are, like any other premium smartphones, as much cameras as they are cell phones for communicating and organizing your daily life. You probably take dozens of photos every day and have hundreds, maybe thousands, stored on the device. The same goes for videos. All these images and videos are viewable by anyone who gets hold of or a peek at your phone unless you hide them in a secret folder. Yes, you can do this. It might be to keep your child from seeing inappropriate memes you have saved to send to family members or work colleagues from seeing personal photos or videos of your night out with friends.