Nokia is determined to help its customers be a little greener. New Nokia phone chargers will use alerts to remind users to unplug their chargers from electrical sockets once their phones are charged.

Users typically unplug mobile phones from the charger when finished, but many leave their charger plugged in. Even without a phone attached, phone chargers draw power and waste electricity.

Nokia will add the alerts to phone chargers starting with its handsets announced last week:

Nokia has decided to put the alerts into mass markets products first to help maximise the potential energy savings. The Nokia 1200, Nokia 1208, Nokia 1650 are targeting high volumes of sales in fast growing markets like India, China and Latin America.

The alerts are the latest in a series of energy saving initiatives from Nokia. Last year the company's newest range of chargers were awarded an Energy Star by the Environmental Protection Agency (EPA) in the US. for their energy efficiency. The chargers, in use since 2005, far exceed the EPA standards by using 50- 70% less energy than the Energy Star requirement, and also meet the highest European Union standards.

What else can mobile users do to be green? Do you currently unplug your phone charger after recharging your cell phone?