Another trend in counterfeiting, especially seen in consumer electronics, is the manufacture of entirely new products using poor quality materials or, more often, incorporating desirable features not present in a brand's authentic product line and then including prominent and fake brand names and logotypes to profit from brand recognition or brand image. An example would be imitation "Nokia" and "iPhone" cellular phones with features like dual SIM slots or analog TV, which are unavailable in authentic originals, or visually-identical clones of high-end smartphones using inferior components and the Android operating system, often with user interfaces made to resemble the devices they imitate. Another example would be imitation "iPod" MP3 players whose batteries are removable and replaceable, whereas in authentic originals the batteries are permanently installed.