Your Play has a single button located on the narrow end of the device. There are two ways to use the button:
1. A single press
2. Press and hold
Pressing the button a single time is used for "scrolling" through the screens — you can move from step count, to stair count, to distance, to calories burned, to active minutes, to clock and battery status, and to your name.
The press and hold is used for "opening" or "selecting" a feature.
For example, if you press and hold the button, you will see an airplane symbol, with the options Off and On. This is airplane mode. If you want to turn airplane mode ON (to disable Bluetooth from transmitting), press and hold the button to select the ON option. Repeat this to turn Airplane mode OFF.