The new iPhone is expected to include wireless charging and 3D sensors
The Apple iPhone 8 is expected to include new features such as high-resolution displays, wireless charging and 3-D sensors. Rather than representing major breakthroughs, however, most of the innovations have been available in competing phones for several years.
Apple's relatively slow adoption of new features both reflects and reinforces the fact smartphone customers are holding onto their phones longer.
Timothy Arcuri, an analyst at Cowen & Co, believes upwards of 40 percent of iPhones on the market are more than two years old, a historical high.
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That is a big reason why investors have driven Apple shares to an all-time high. There is pent-up demand for a new iPhone, even if it does not offer breakthrough technologies.
The growth is all about refresh
It is not clear whether Apple deliberately held off on packing some of the new features into the current iPhone 7, which has been criticised for a lack of differentiation from its predecessor. Apple declined to comment on the upcoming product.
Still, the development and roll-out of the anniversary iPhone suggest Apple's product strategy is driven less by technological innovation than by consumer upgrade cycles and Apple's own business and marketing needs.
"When a market gets saturated, the growth is all about refresh," said Bob O'Donnell of Technalysis Research.
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iPhone 8 is shaping up to be one of the most impressive Apple smartphones to date, with glass panels on the front and rear of the device, a curved borderless OLED display and no Home Button
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Apple iPhone 8 will debut a brand-new all-glass look, with a curved OLED display and no physical Home Button
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"This is exactly what happened to PCs. It's exactly what happened to tablets. It's starting to happen to smartphones."
Apple is close-mouthed about upcoming product features, but analysts and reports from Asian component suppliers and others indicate that high-resolution displays based on OLED technology – possibly with curved edges – are likely to be part of the anniversary phone. A radical new design is not expected, according to analysts.
Some of the anticipated new technologies, notably wireless charging, remain messy. Samsung Electronics Co Ltd phones, for example, feature wireless charging but support two different sets of standards, one called Qi and the other AirFuel.
Some of the proposed new technologies, such as wireless charging, need smoothing out
Apple recently joined the group backing Qi. But there are still at least five different groups working on wireless charging technology within Apple, according to a person with knowledge of the matter.
As to 3-D sensors, there is already one hiding in the iPhone 7. The front camera features what is known as a time-of-flight sensor, which helps it autofocus and is used in numerous phones including the Blackberry, according to TechInsights, a firm that examines the chips inside tech devices.
That sensor could be upgraded to a higher-resolution version that could handle 3-D mapping for facial recognition, said Jim Morrison, vice president at TechInsights.
Some analysts also speculate the company could remove the phone's home button, placing it and a fingerprint sensor beneath the front display glass, based on patents the company has filed.