| OnePlus Ace 2 |
Xiaomi Redmi Note 9 Pro |
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| Hardware and OS | OnePlus Ace 2 | Xiaomi Redmi Note 9 Pro |
| Operating system | Android 13, ColorOS 13 | Android 10.0; MIUI 11 |
| Processor | Octa-core (1x3.19 GHz Cortex-X2 & 3x2.75 GHz Cortex-A710 & 4x1.80 GHz Cortex-A510) | Octa-core (2x2.3 GHz Kryo 465 Gold & 6x1.8 GHz Kryo 465 Silver) |
| Chipset | Qualcomm SM8475 Snapdragon 8 Gen 1 (4 nm) | Qualcomm SM7125 Snapdragon 720G (8 nm) |
| GPU | Adreno 730 | Adreno 618 |
| Internal memory | 256GB 12GB RAM, 256GB 16GB RAM, 512GB 16GB RAM | 64GB 4GB RAM, 128GB 6GB RAM |
| External memory | No | microSDXC (dedicated slot) |
| Display | OnePlus Ace 2 | Xiaomi Redmi Note 9 Pro |
| Type | AMOLED, 1B colors, 120Hz, HDR10 | IPS LCD |
| Size | 6.74 inches, 109.2 cm2(~90.0% screen-to-body ratio) | 6.67" inc |
| Resolution | 1240 x 2772 pixels, 20:9 ratio | 1080 x 2400 px |
| Protection | Asahi Glass | 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 | OnePlus Ace 2 | Xiaomi Redmi Note 9 Pro |
| 5G Network | 1, 3, 5, 8, 28, 40, 41, 77, 78 SA/NSA | |
| WLAN | Wi-Fi 802.11 a/b/g/n/ac/6, dual-band | |
| Infrared port | Yes | |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| NFC | Yes, eSE, HCE | |
| 3G Network | HSDPA 850 / 900 / 1700(AWS) / 2100 | HSDPA 850 / 900 / 1900 / 2100 |
| 4G Network | 1, 3, 4, 5, 8, 28, 34, 38, 39, 40, 41 | LTE band 1(2100), 3(1800), 5(850), 8(900), 40(2300), 41(2500) |
| CDMA | CDMA 800 | |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot | |
| Technology | GSM / CDMA / HSPA / LTE / 5G | |
| Network | GSM / HSPA / LTE | |
| SIM card | Dual SIM (Nano-SIM, dual stand-by) | |
| Bluetooth | 5.3, A2DP, LE | 5.0, A2DP, LE |
| Edge | Yes | |
| GPRS | Yes | |
| GPS | Yes, with A-GPS, GLONASS, GALILEO, BDS, NavIC | |
| Speed | HSPA, LTE-A (CA), 5G | HSPA 42.2/5.76 Mbps, LTE-A |
| USB | USB Type-C 2.0 | 2.0, Type-C 1.0 reversible connector |
| Main Camera | OnePlus Ace 2 | Xiaomi Redmi Note 9 Pro |
| Camera | 50 MP, f/1.8, 24mm (wide), 1/1.56", 1.0µm, PDAF, OIS 8 MP, f/2.2, 16mm, 120? (ultrawide), 1/4.0", 1.12µm 2 MP, f/2.4, (macro) | |
| Features | LED flash, HDR, panorama | |
| Video | 4K@30/60fps, 1080p@30/60/120/240fps, gyro-EIS | |
| Selfie camera | OnePlus Ace 2 | Xiaomi Redmi Note 9 Pro |
| Camera | 16 MP, f/2.4, 26mm (wide), 1/3.09", 1.0µm | |
| Features | HDR | |
| Video | 1080p@30fps | |
| Camera | OnePlus Ace 2 | 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 | OnePlus Ace 2 | Xiaomi Redmi Note 9 Pro |
| Multimedia | 24-bit/192kHz audio | |
| Loudspeaker | Yes, with stereo speakers | |
| 3.5 mm Jack | No | Yes |
| Radio | FM radio, recording | |
| Design | OnePlus Ace 2 | Xiaomi Redmi Note 9 Pro |
| SIM | Dual SIM (Nano-SIM, dual stand-by) | |
| Colors | Black, Glacier Blue | Aurora Blue, Glacier White, Interstellar Black |
| Body build | Glass front (Asahi Glass), aluminum frame, glass back (Gorilla Glass 5) | Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), plastic frame |
| Dimensions | 163.4 x 74.3 x 8.7 mm (6.43 x 2.93 x 0.34 in) | 165.8 x 76.7 x 8.8 mm |
| Weight | 204 g (7.20 oz) | 209 g |
| Features | OnePlus Ace 2 | Xiaomi Redmi Note 9 Pro |
| Sensors | Fingerprint (under display, optical), accelerometer, gyro, proximity, compass, color spectrum | |
| Battery | OnePlus Ace 2 | Xiaomi Redmi Note 9 Pro |
| Type | Li-Po 5000 mAh, non-removable | |
| Charging | 100W wired, 1-100% in 25 min (advertised) | |
| Battery capacity | 5020 mAh, Non-removable Li-Po | |
| Other | OnePlus Ace 2 | Xiaomi Redmi Note 9 Pro |
| Release date | 2020, March 12 | |
| Sensors | Fingerprint (side-mounted), accelerometer, gyro, proximity, compass , Infrared port |
