
Introducing Oppo A91 - Adding Another Solid Choice in the Mid-range Segment for the Year-End
1. Design
In terms of design, Oppo smartphones have always been a strong point, and the newly launched A91 is no exception. It features a waterdrop screen design on the front with a notch housing the front camera. With a large 6.4-inch screen size, 20:9 aspect ratio, and occupying 90.7% of the front area, users have ample space for operation.

Waterdrop screen design
The Super AMOLED display with Full HD+ resolution also enhances image clarity and realism. The screen on this device is equipped with active eye protection feature, adjusting screen brightness through DC dimming 2.0 technology, especially suitable for those who frequently play games and watch movies.
The device's edges remain largely unchanged compared to previous models, with volume control on the left and power button on the right.
The back panel of this phone is made of durable scratch-resistant glass, housing a vertically arranged quad-camera system. At the bottom edge of the phone is the USB Type-C charging port and a 3.5mm headphone jack.

The back panel is crafted from glass
Thanks to the Super AMOLED display, Oppo has integrated fingerprint sensor technology into the screen, making device unlocking much more convenient.
2. Configuration
Powering the device is the Helio P70 processor from MediaTek, coupled with 8GB of RAM for smoother multitasking. The default storage space on the Oppo A91 is 128GB, but users can expand it by an additional 256GB via the microSD card slot.

Impressive configuration in the current segment
On the software front, the A91 comes with the exclusive ColorOS 6.1 interface based on Android 9 Pie out of the box. The Game Boost 2.0 feature is also integrated to enhance gaming experience on this mid-range smartphone.

The device runs on Android 9 platform with ColorOS 6.1 interface
3. Camera system
The rear quad-camera system is arranged vertically, featuring a main sensor with a resolution of 48MP, an 8MP ultra-wide sensor with a 119-degree field of view, a 2MP macro sensor, and a 2MP depth sensor for portrait shots.

A 4-camera system with a primary sensor up to 48MP
The 16MP selfie camera is equipped with various technologies, including AI beauty mode, allowing users to effortlessly capture high-quality selfies without the need for additional editing through third-party apps.
4. Battery capacity
Oppo A91 comes equipped with a 4025mAh battery, providing sufficient capacity to meet the demands of a full day's use. To shorten charging time, Oppo has also incorporated the new VOOC 4.0 fast charging technology with a maximum power of 30W through the USB-C port, allowing users to charge from 0% to 50% in just about 30 minutes.
5. Pricing
Oppo A91 is now available for pre-order in the Chinese market and is expected to officially hit shelves on December 26th with a price tag of 1999 NDT (approximately 6.6 million Vietnamese Dong), offering three color options: Black, Red, and Blue.

Users have 3 color options to choose from
