Samsung's A42 5G is a mid-range smartphone that features a 6.6-inch 1080x2400 (399 PPI) Super AMOLED display, 128GB of internal storage, a microSDXC slot, a quad camera setup and 5G connectivity.

Samsung Galaxy A42 5G photo
The A42 5G will ship in November 2020 at around $440.

OLED type: 

6.6-inch 1080x2400 Super AMOLED

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Atomic Force Microscopy for next-gen OLED processesAtomic Force Microscopy for next-gen OLED processes