Ming-Chi Kuo.: Apple’s 2020 iPhones will be all-OLED: 5.4- and 6.7-inch models with 5G, 6.1-inch model With LTE

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Apple plans to release three new iPhones in the second half of 2020, including high-end 5.4-inch and 6.7-inch models with OLED displays and a lower-end 6.1-inch model with an OLED display, according to analyst Ming-Chi Kuo. Those display sizes line up with a DigiTimes report from a few months ago.
In a research note shared with Chinese media outlets today, Kuo said the 5.4-inch and 6.7-inch models will support 5G, while the 6.1-inch model will support up to LTE.
The new 5.4-inch and 6.7-inch sizes suggest that Apple may be planning to shrink the size of the current 5.8-inch iPhone XS, a move that fans of smaller phones would certainly appreciate, while increasing the size of the current 6.5-inch iPhone XS Max. The iPhone XR would remain a 6.1-inch device.

MacDailyNews Take: Those 5G units are going to start an upgrade avalanche! Hopefully, Apple will have plenty of those 5G units ready to go at launch for Christmas 2020.
A wider variance of display sizes will work well for sales, too, as those who prefer smaller iPhones will likely enjoy the 5.4-inch model which, without a Home button chin, will be smaller physically than it sounds.