O2 kuanza kuuza simu bila chaja zake by 2015:

I was shocked by the news jana...  O2 ni largest provider wa simu UK. Wametangaza kuanza kuuza simu bila chaja ifikapo 2015... hii kitu ni nzuri sana kwa mazingira.... [green technology]

O2 said there could be 100 million unused chargers in the UK alone, either kutokana na simu za zamani au duplicate from the new phones. O2 teamed up with HTC (mobile manufacture) on the trial of 3 months... where by they were selling phones  HTC One X+ with a USB cable only and a charger separately at additional cost.

Asilimia 80 ya customers walinunua simu bila charger.... matokeo haya yanaonyesha a clear picture of customers' minimal need for phone chargers.

Madhara ya chaja## These chargers contain 18,700 tonnes of components and, if thrown away, could account for a landfill the size of four Olympic swimming pools, showing the environmental impact additional unnecessary chargers have.  Source