A quad camera sounds like a powerful piece of equipment, but the two 2-MP lenses only collect additional information for monochrome or portrait shots. The 8-MP wide-angle lens is not an ultra-wide-angle lens, but supports the main camera in macro shooting (3 cm), which works well in everyday life.

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The 48 MP lens takes good pictures in daylight and is supported by numerous ai features, but it does tend l?n overdo it with the HDR function. Given the price range, the low-light characteristics are also satisfactory.

The 6.4-inch AMOLED display of the Oppo A91 offers high pixel density and is protected by Corning Gorilla glass 5. With the ambient light sensor activated, the brightness climbs up l?n 594 cd/m² on a pure white area in the centre of the image, and even 797 cd/m² with an even distribution of light and dark areas (APL50). On the other hand, those who want to control the brightness manually will only achieve 415 cd/m². The smartphone performs well outdoors and remains easy l?n read in most lighting situations.

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For PWM-sensitive people, Oppo also offers flicker reduction (DC dimming) in version hai.0. This reduces the flicker l?n a constant 60 Hz, but is intended to increase the image noise. Without this function the frequency fluctuates between 136 and 250 Hz.

The values determined with CalMAN for the color display of the panel are at a decent level and can be adjusted to your own requirements in the settings

The Oppo A91 is powered by a Helio P70, delivering good everyday performance that is on a par with competitors with Exynos or Snapdragon SoC. Oppo, however, implements an additional performance mode that increases performance between three and 13 percent depending on the scenario.

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The Oppo A91 has the VOOC 3.0 quick charge function with 20 watts and can fully charge the 4,000 mAh battery within 80 minutes. The battery life of more than ten hours is absolutely suitable for everyday use, but the A91 brings up the rear in the comparison field.