| Oppo A77s |
Xiaomi Redmi Note 9 Pro |
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| Hardware and OS | Oppo A77s | Xiaomi Redmi Note 9 Pro |
| Operating system | Android 12, ColorOS 12.1 | Android 10.0; MIUI 11 |
| Processor | Octa-core (4x2.4 GHz Kryo 265 Gold & 4x1.9 GHz Kryo 265 Silver) | Octa-core (2x2.3 GHz Kryo 465 Gold & 6x1.8 GHz Kryo 465 Silver) |
| Chipset | Qualcomm SM6225 Snapdragon 680 4G (6 nm) | Qualcomm SM7125 Snapdragon 720G (8 nm) |
| GPU | Adreno 610 | Adreno 618 |
| Internal memory | 128GB 8GB RAM | 64GB 4GB RAM, 128GB 6GB RAM |
| External memory | microSDXC | microSDXC (dedicated slot) |
| Display | Oppo A77s | Xiaomi Redmi Note 9 Pro |
| Type | IPS LCD, 90Hz, 480 nits (typ), 600 nits (HBM) | IPS LCD |
| Size | 6.56 inches, 103.4 cm2(~84.2% screen-to-body ratio) | 6.67" inc |
| Resolution | 720 x 1612 pixels, 20:9 ratio | 1080 x 2400 px |
| Protection | Corning Gorilla Glass 5 | |
| Touchscreen | capacitive touchscreen | |
| Screen-to-Body Ratio | 84.5% | |
| Display area | 107.4 cm2 | |
| Display aspect ratio | 20:9 (height:width) | |
| Pixel Density | 395 PPI | |
| Colors | 16M | |
| Other | 450 nits typ. brightness (advertised) | |
| Connectivity | Oppo A77s | Xiaomi Redmi Note 9 Pro |
| WLAN | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot | |
| NFC | Yes | |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 850 / 900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 |
| Technology | GSM / HSPA / LTE | |
| 4G Network | 1, 3, 5, 7, 8, 28, 38, 40, 41 | LTE band 1(2100), 3(1800), 5(850), 8(900), 40(2300), 41(2500) |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot | |
| Network | GSM / HSPA / LTE | |
| SIM card | Dual SIM (Nano-SIM, dual stand-by) | |
| Bluetooth | 5.0, A2DP, LE, aptX HD | 5.0, A2DP, LE |
| Edge | Yes | |
| GPRS | Yes | |
| GPS | Yes, with A-GPS, GLONASS, BDS, GALILEO, QZSS | Yes, with A-GPS, GLONASS, GALILEO, BDS, NavIC |
| Speed | HSPA 42.2/5.76 Mbps, LTE | HSPA 42.2/5.76 Mbps, LTE-A |
| USB | USB Type-C 2.0, USB On-The-Go | 2.0, Type-C 1.0 reversible connector |
| Main Camera | Oppo A77s | Xiaomi Redmi Note 9 Pro |
| Camera | 50 MP, f/1.8, 27mm (wide), PDAF 2 MP, f/2.4, (depth) | |
| Features | LED flash, HDR, panorama | |
| Video | 1080p@30fps | |
| Selfie camera | Oppo A77s | Xiaomi Redmi Note 9 Pro |
| Camera | 8 MP, f/2.0, 26mm (wide) | |
| Features | Panorama | |
| Video | 1080p@30fps | |
| Camera | Oppo A77s | Xiaomi Redmi Note 9 Pro |
| Main camera | 48 MP, Quad | |
| Specs | 48 MP, f/1.8, (wide), 1/2.25", 0.8µm, PDAF -8 MP, f/2.2, 13mm (ultrawide), 1/4.0", 1.12µm -5 MP, f/2.4, (macro), 1.12µm -2 MP, f/2.4, (depth) | |
| Features | LED flash, HDR, panorama | |
| Video | 2160p@30fps, 1080p@30/60/120fps, 720p@960fps, gyro-EIS | |
| Selfie camera | 16 MP, Single | |
| Multimedia | Oppo A77s | Xiaomi Redmi Note 9 Pro |
| Loudspeaker | Yes, with stereo speakers | |
| 3.5 mm Jack | Yes | Yes |
| Radio | FM radio, recording | |
| Features | Oppo A77s | Xiaomi Redmi Note 9 Pro |
| Sensors | Fingerprint (side-mounted), accelerometer, proximity, compass | |
| Design | Oppo A77s | Xiaomi Redmi Note 9 Pro |
| Body | IP54, dust and water resistant | |
| SIM | Dual SIM (Nano-SIM, dual stand-by) | |
| Colors | Sunset Orange, Starry Black | Aurora Blue, Glacier White, Interstellar Black |
| Body build | Glass front, plastic frame, plastic back or eco leather back | Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), plastic frame |
| Dimensions | 163.8 x 75 x 8 mm (6.45 x 2.95 x 0.31 in) | 165.8 x 76.7 x 8.8 mm |
| Weight | 187 g / 190 g (6.60 oz) | 209 g |
| Battery | Oppo A77s | Xiaomi Redmi Note 9 Pro |
| Type | Li-Po 5000 mAh, non-removable | |
| Charging | Fast charging 33W, 100% in 69 min (advertised) | |
| Battery capacity | 5020 mAh, Non-removable Li-Po | |
| Other | Oppo A77s | Xiaomi Redmi Note 9 Pro |
| Release date | 2020, March 12 | |
| Sensors | Fingerprint (side-mounted), accelerometer, gyro, proximity, compass , Infrared port |