Apparatuses and methods for starting a mobile communications device are disclosed. The mobile communications device is operated by a device user. The device includes an output device for emitting a sensible signal. An input device receives user input from the device user. An alarm application receives an input time and date through the input device and determines an adjusted time and date. The adjusted time and date comprises the input time and date minus a predicted boot time for the device. The alarm application also causes the output device to emit the sensible signal at the input time and date. A system timer component monitors a current time and date when the device is in a low-power or off state and initiates a boot process when the current time and date match the adjusted time and date. The boot process is completed prior to the input time and date to enable the alarm application to cause emission of the sensible signal at the input time and date.