And get notifications on your Android phone or tablet. Nest automatically uses sensors, algorithms and the phone's location to do the right thing, turn off the heat and turn on the camera when exiting. Forgot to set the alarm? It will notice and send you a Reminder alert. Nest Learning Thermostat and Nest Thermostat E Thermostats that program themselves to help you save energy. - Change the temperature from the subway or sofa using your phone. - See how much energy you use and why. - View and edit your schedule. Receive extreme temperature alerts before your home gets too cold.