Embodiments of the present invention thus function to manage the energy usage of the mobile device 100, in which the consumption of battery power by the heaters is minimized, the duration of a given battery charge is extended, along with the corresponding time until a recharge becomes appropriate. Example embodiments of the present invention thus relate to a method for managing energy usage by a mobile device.
An example embodiment of the present invention further relates to a method for managing energy usage by a mobile device. 
At 31, an environmental characteristic is monitored over at least two environments in which the mobile device is operable.
At 32, a location of the mobile device is tracked in relation to the at least two environments.
At 33, the mobile device is informed, based on the tracking. The mobile device is informed with data relating to the at least one environmental characteristic of the environment in which the mobile device is located.
At 34, a characteristic of the mobile device is sensed.
The data, related to the at least one environmental characteristic of the environment in which the mobile device is located, are compared, at 35, to the sensed characteristic of the mobile device.
At 36, an action is determined in relation to at least one energy-using operation of the mobile device based on the comparing of the environmental characteristic data to the sensed mobile device characteristic.