UBI Research says that the size of smartphone OLED panels is slowly increasing - in 2017, 52.5% of the OLED panels were 5.5-5.99 inch in size, and in 2019 this decreased to 49.6%.

Smartphone OLED shipment ratio (2017-2019, UBI Research)

Looking back at 2917, 78.5% of all OLED smartphones were larger than 5.5-inch, and this has grown to 91.9% in 2019. Consumers are preferring larger and larger smartphone displays...

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This is meaningless,

This is meaningless, measuring in cm² would a lot more sense as the width hasn't changed much.

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