The Nokia 7900 is a

mobile phone A mobile phone, cellular phone, cell phone, cellphone, handphone, hand phone or pocket phone, sometimes shortened to simply mobile, cell, or just phone, is a portable telephone that can make and receive calls over a radio frequency link whil ...

produced by

Nokia Nokia Corporation (natively Nokia Oyj, referred to as Nokia) is a Finnish multinational corporation, multinational telecommunications industry, telecommunications, technology company, information technology, and consumer electronics corporatio ...

and announced on August 7, 2007. It is part of Nokia's Prism Collection. It runs S40 5th Edition. It is a quadband phone and has WCDMA on 850 MHz and 2100 MHz. The screen is powered by

OLED An organic light-emitting diode (OLED or organic LED), also known as organic electroluminescent (organic EL) diode, is a light-emitting diode (LED) in which the emissive electroluminescent layer is a film of organic compound that emits light i ...

technology, Nokia's first, and has a resolution of 320x240 pixels showing 16 million colors. Included is a 2-megapixel camera with flash, an 850mAh battery, and 1 GB of on board memory. Dimensions are as follows: 112 x 45 x 11.3 mm; 101 grams. There is a Nokia 7900 Crystal Prism, which has the same features, but the material of the casing is different.

References

Information Source
{{Nokia phones 7900 Mobile phones introduced in 2007 Mobile phones with user-replaceable battery