If you need emergency help, your device can send an SOS. The way you do this depends on your device. Press and hold the power button on most phones for five seconds to activate it. You can also create a custom shortcut, like pressing the volume buttons three times in a row. Once you activate the emergency SOS, your phone will automatically call emergency services and send them your location. You can also send a text message to your emergency contacts to let them know you need help.