If you didn't set up Edge Sense when you first set up your phone, you can do it in Settings.
- Tap > > Settings.
- Tap Edge Sense.
- Follow the onscreen instructions to complete the process.
- To turn it on or off, tap the Edge Sense On/Off switch in Settings.
After you've finished setting up Edge Sense, it works in Basic mode which, by default, allows you to launch the Camera app and take shots with a squeeze of your phone. See Take Camera Shots Using Edge Sense. If you want to assign another action or app to the squeeze gesture, see Change the Action When You Squeeze the Phone.
Edge Sense also has an Advanced mode that gives you two types of squeeze gestures: a short squeeze and a squeeze and hold. For details, see Enable Advanced Mode.