A computer-implemented method for managing a power mode of a designated electronic device, the method comprising: determining, by a mobile electronic device, a geographical location of the mobile electronic device (S2O2); comparing, by the mobile electronic device, the determined geographical location of the mobile electronic device with a stored location of a designated electronic device, the designated electronic device being in a power-off mode (S2O6); and repeatedly sending, by the mobile electronic device, a wake-up signal to the designated electronic device, for a designated period of time, if the determined geographical location of the mobile electronic device is within a proximity threshold of the designated electronic device (S2O8), wherein the wake-up signal is configured to cause the designated electronic device to enter a power-on mode upon receipt of the wake-up signal; periodically updating, by the mobile electronic device, the geographical location of the mobile electronic device, wherein the periodically updating continues after the mobile device stops sending the wake-up signal to the designated electronic device; and resetting the mobile electronic device if a distance between the updated geographical location of the mobile device and the stored location of the designated electronic device exceeds the proximity threshold, wherein resetting the mobile electronic device causes it to enter a reset mode, wherein another wake-up signal is sent by the reset mobile electronic device to the designated electronic device if, subsequent to entering the reset mode, the reset mobile electronic device is determined to be within a proximity threshold of the designated electronic device. determining, by a mobile electronic device, a geographical location of the mobile electronic device (S2O2); comparing, by the mobile electronic device, the determined geographical location of the mobile electronic device with a stored location of a designated electronic device, the designated electronic device being in a power-off mode (S2O6); and repeatedly sending, by the mobile electronic device, a wake-up signal to the designated electronic device, for a designated period of time, if the determined geographical location of the mobile electronic device is within a proximity threshold of the designated electronic device (S2O8), wherein the wake-up signal is configured to cause the designated electronic device to enter a power-on mode upon receipt of the wake-up signal; periodically updating, by the mobile electronic device, the geographical location of the mobile electronic device, wherein the periodically updating continues after the mobile device stops sending the wake-up signal to the designated electronic device; and resetting the mobile electronic device if a distance between the updated geographical location of the mobile device and the stored location of the designated electronic device exceeds the proximity threshold, wherein resetting the mobile electronic device causes it to enter a reset mode, wherein another wake-up signal is sent by the reset mobile electronic device to the designated electronic device if, subsequent to entering the reset mode, the reset mobile electronic device is determined to be within a proximity threshold of the designated electronic device.