The document proposes the e-Best phone, which runs on both electricity and solar energy. It describes the phone as compact, cheap to run, with an amazing camera, incredible apps, and a light, resistant design. The phone is targeted towards young, environmentally conscious people ages 10 and up. Production is proposed to take place in Germany, with the phone being sold in phone shops in Spain, Germany, and France. A cost analysis estimates the costs of production facilities, machines, materials, labor, and the break-even point for sales. Potential cooperation with universities and hiring of engineers and developers is discussed. A SWOT analysis notes the phone's potential as a revolutionary, cheap, and functional product but acknowledges costs, competition