How to Hide Things on the iPhone
The restrictions option on the iPhone gives users the ability to disable certain types of content and hide them from view. Restrictions are available for music, podcasts, applications, web browsing and a variety of other functions, making it possible for you to hide content and functions that you don't want to be available to others. Once the restrictions are set, the restricted items completely disappear from view. They only become visible again when the restrictions are turned off.
Press the "Settings" icon on your iPhone's home screen.
Select "General" from the Settings menu.
Scroll down and select "Restrictions." If there are currently restrictions set on your phone, you will be prompted to enter a passcode here.
Press the "Enable Restrictions" button at the top of the screen, and enter a four-digit passcode. This passcode must be entered each time you want to make changes to your restrictions settings, so make sure you choose a passcode you can remember.
Select which iPhone functions and content types you want to hide from view. Some of your options include hiding Safari, YouTube, iTunes, Ping, Location, FaceTime, Camera, App Installation and Account Settings. You can also hide music and podcasts with explicit lyrics and block videos and applications based on content rating.
Exit the restrictions menu to save your changes. All the restrictions you turned on are hidden from view on your iPhone. You turn off the restrictions with the four-digit passcode to access them in the future.