Bloomberg said Tuesday that Apple is testing three new phones that it plans to launch this fall, including two with the same screen sizes as the iPhone 7 and iPhone 7 Plus.
A consistent report is the new iPhones may have edge-to-edge curved glass OLED screens.
Bloomberg's sources do say the display-integrated version of the scanner is proving "technically challenging", so the expected shipping delay could well be down to this, too.
It is also said that the first is a 4.7-inch phone and the second one is a 5.5-inch phone while the third one is completely new.
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"If it's not able to fix the problems in that time frame, Apple may be forced to eliminate fingerprint sensing from the OLED iPhone altogether". For one, this suggests that Apple could have chose to ditch the display-embedded fingerprint reader it was reported to be working on for the nearly bezel-less model.
Corroborating months of rumours, Bloomberg's Mark Gurman says Apple will release three iPhone models later this year.
Bloomberg claims Apple has been testing numerous prototypes, one of the latest of which apparently features "slightly curved glass on the front and the back". Expect more glass, with subtle curves. New components of the look will include a new type of screen, curved glass and stainless steel materials. It would thus have a screen around the same size as the current iPhone 7 Plus, but crammed into a body the size of the iPhone 7. But there is also an idea that the iPhone 8 would sport a small invisible screen on the back that displays notifications.
But the new design would leave less room for Apple's Touch ID fingerprint sensor, and Apple has had trouble integrating the sensor underneath the screen, according to analysts. This means that some changes could be made to the design of the iPhone before it finally gets unveiled later this year. There is also a tiny circular hole found under the vertical camera module in the illustration, but it wasn't clear what this is for. If the new fingerprint sensor would not fit well, Apple might decide to move the sensor to the back of the phone just like the Samsung Galaxy S8.