The Nokia C7 ran on Symbian^3, an operating system designed for smartphones. Symbian allowed for a high degree of customization, including the ability to create and install themes. These themes were essentially packages that contained various graphical elements such as images, icons, and layout definitions. When a user applied a theme, the phone would reconfigure its interface based on the settings and assets provided in the theme package.
Nokia C7 themes can be found through various channels, including: nokia c7 themes work
3.5" capacitive AMOLED screen, 640 x 360 px (nHD) resolution. Camera: 8 Megapixels with 720p video recording. Battery: BL-5K 1200 mAh. The Nokia C7 ran on Symbian^3, an operating