Apple Had A Back-Up Version For The Next Generation Iphone

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According to a report from DigiTimes, Apple was concurrently working on two models of the next generation iPhone, popularly dubbed the iPhone G4 (for fourth generation rather than 4G, which refers to the mobile broadband protocols) or the iPhone HD for the increase in screen resolution and potential HD video recording features of the device. The iteration that has been floating around on the internet through leaks from Vietnam and Northern California was internally referred to as the N90 model. Reportedly, there is also an N91 model, which boasts some lesser specs, just in case the N90 model had supply shortages or in the event that Apple made serious hardware modifications that may create delays in productions.

According to the analyst, "It's a parallel product to back up the N90 in case there are major delays due to significant modifications in casing, display resolution, digital camera support and so forth."

Also of note is the fact that Apple had rejected the use of AMOLED and/or OLED displays after investigating the screen technology since around the time of the development of the iPhone 3GS. One reason is that there are supply constraints with AMOLED screens, which is causing delays of the Droid Incredible and the AT&T Nexus One.

Yet another explanation is that although AMOLED and OLED screen technologies offer a better display technology for images and videos, creating brighter colors and deeper blacks, the display is not as good as its LCD counterpart for rendering text. According to an analyst, "With Apple quite keen on pushing e-reading businesses, AMOLED may not be the best solution at the moment." Text has been an important element with the iPhone 4.0 operating system, which will be a major element with the iBooks app for electronic books reading and Apple in the end chose LCD perhaps based on the screen technology being able to deliver crisper text.

Regarding the display chosen for the next generation iPhone, it is said that the screen used will employ the same in-plane switching (IPS) technology as the iPad, which allows for better vertical and horizontal viewing angles. Additionally, AppleInsider is reporting that another technology used will be FFS, known as fringe field switching, "which is said to improve the device's e-book reader functions."

The iPhone is also said to use the Apple A4 chipset that debuted with the iPad, which is an ARM Cortex A8 chipset rather than the newer ARM Cortex A9 specifications. The reason is that the operating system must be written to take advantage of the performance enhancements seen on the ARM Cortex A9, and that won't be ready in time for launch. According to the analyst, "Since the launch schedule of the Cortex A9 processor is estimated for year's end and iPhone 4.0 is not ready to fully utilize a multi-core processor, the A4 is the most likely candidate."