In fact, rumors that Apple will use the 8-megapixel sensor for the iPhone, which will present in 2011 were released on the internet before it was confirmed 5-megapixel sensor in the iPhone 4.
Shares of OmniVision, which is the incumbent chamber sensors to Apple, fell sharply last summer, when you are hearing that Apple is considering using sensors from Sony for the next versions of the iPhone. Same thing happened yesterday with the shares of OmniVision, which further confirms this rumor. Backlit sensor of the iPhone OmniVision 4 makes a very good HD video, but on the pictures, there are many complaints about the yellow shades in the images of birds, and false representation of color images in the open - things that can not be corrected by the backlit sensor. Therefore, this rumor seems quite credible, given that Apple wants to use only the best for their gadgets.
Since Apple may have their sights on the new sensor Exmor R chamber of Sony, as a Sony Ericsson Xperia arc and Xperia neo. 8-megapixel sensor is backlit and contributes to better shooting in poorly lit areas, like 5-megapixel sensor in the iPhone OmniVision 4. See the video below which shows the capabilities of the sensor Exmor R from Sony.
Also, Sony has a 16-megapixel Exmor R sensor that is embedded in your phone Sony Ericsson CyberShot S006, intended for the Japanese market. With the development of two Tegra processors, TI OMAP4 and Snapdragon, will soon have the opportunity for hardware support for more than 18 megapixel sensors. The amount of 8-megapixel Exmor R sensor that can occur in the next version of iPhone e 1/3.2 ".
This is far from the largest chamber in the phone sensor - 1/1.8 "the 12-megapixel sensor Nokia N8, but Sony has created a new way of arranging the photo diodes, which are adapted to the finer pixel structure and It should create sharper images with less noise in low light conditions. In the photos below you can see the advantages of backlit Exmor R sensor of Sony, which makes more detailed and bright images in comparison with a conventional 5-megapixel camera phone.