1. Open the Facebook app on your iPhone or Android device.
2. Tap the three horizontal lines (this is the hamburger menu). On an iPhone, this is in the bottom right corner of the screen; on an Android, it's in the top right corner.
3. Tap Settings & Privacy.
4. Tap Settings in the dropdown menu.
5. In the Audience and visibility section, tap How people can find and contact you.
6. Tap Who can see your friends list?
7. Choose who you want to be able to see your friends list. You can choose: Public, Friends, Friends except, Specific friends, or Only me