iPhone Security When Showing Pics
Use Guided Access

Open Settings.app -&gt; General -&gt; Accessibility -&gt; Guided Access (On)
Open your Photos app and choose the album you want to show your friends.
Triple-click the side lock button (or home button, if applicable).
Select Guided Access if menu appears
Choose to deactivate certain areas of the touch screen to prevent them from accessing navigation.
Set a password when prompted
Start guided access and hand your phone around.

To End:

Triple-click side button
Tap Guided Access on menu if prompted
Enter Password
Select &quot;End&quot;

Tips: Restarting your phone will circumvent Guided Access so you will want to have a password on your phone. On iOS 9 you can swipe down on a photo to go back to the album view. To take care of this, make sure that you have only the photos that you want to be visible in a folder. Then disable the top, left, and bottom sections of the touch screen. Disable the left to prevent a swipe from moving them back to the main album photo listing.
After you setup Guided Access, it will remember your settings. If you just want to show one picture, just disable touch altogether.