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SCREEN
From the side of the screen, the Vivo X50 is slightly bigger. Namely 6.56 inches (2,376 x 1,080 pixels). Also has a refresh rate of up to 90 Hz. However, the 6.4-inch Oppo Reno 4 screen is even sharper (2,400 x 1,080 pixels).
The type of screen used by Oppo Reno 4 is superior: Super AMOLED. Meanwhile, the Vivo X50 only uses the regular Amoled screen. On paper, the Super Amoled screen is 20 percent brighter, 20 percent more efficient, and 80 percent better at resisting sunlight than Amoled.
The 90 Hz refresh rate feature is actually not very useful. Only reduces battery consumption. In contrast, increasing the refresh rate from 60 Hz to 120 Hz just feels the difference.
DESIGN
Both Vivo X50 and Oppo Reno 4 have compact dimensions. The size is equally thin. However, the Oppo Reno 4 is still much lighter. Namely 165 grams compared to 173 grams. From the rear camera position, the Oppo Reno 4 design looks more elegant. While the back cover of the Vivo X50 is more standard. In fact, the price is much more expensive.
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