| OPPO F21s Pro |
Xiaomi Redmi Note 9 Pro |
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| Hardware and OS | OPPO F21s Pro | Xiaomi Redmi Note 9 Pro |
| Operating system | Android v12 | Android 10.0; MIUI 11 |
| Processor | 2.2 GHz, Octa Core Processor | Octa-core (2x2.3 GHz Kryo 465 Gold & 6x1.8 GHz Kryo 465 Silver) |
| Chipset | Qualcomm Snapdragon 695 | Qualcomm SM7125 Snapdragon 720G (8 nm) |
| GPU | Adreno 619 | Adreno 618 |
| Cores | 2x2.2 GHz Kryo 660 Gold & 6x1.7 GHz Kryo 660 Silver | |
| Internal memory | 64GB 4GB RAM, 128GB 6GB RAM | |
| External memory | microSDXC (dedicated slot) | |
| Ram | 8 GB | |
| Storage | 128 GB | |
| Card Slot | Yes, upto 512 GB | |
| Display | OPPO F21s Pro | Xiaomi Redmi Note 9 Pro |
| Type | Color AMOLED Screen (16.7M) | IPS LCD |
| Size | 6.43 inches, 1080 x 2400 pixels, 60 Hz | 6.67" inc |
| Resolution | 1080 x 2400 px | |
| Protection | Corning Gorilla Glass 5 | |
| Touchscreen | capacitive touchscreen | |
| Aspect Ratio | 20:9 | |
| Screen-to-Body Ratio | 84.5% | |
| Glass Type | Corning Gorilla Glass | |
| Display area | 107.4 cm2 | |
| PPI | ~409 PPI | |
| Display aspect ratio | 20:9 (height:width) | |
| Screen to Body Ratio | ~ 90.8% | |
| Pixel Density | 395 PPI | |
| Touch | Yes, with Multitouch | |
| Colors | 16M | |
| Features | 180Hz touch Sampling Rate, 600 nits, 97% NTSC/93% DCI-P3 Gentle mode | |
| Other | 450 nits typ. brightness (advertised) | |
| Main Camera | OPPO F21s Pro | Xiaomi Redmi Note 9 Pro |
| Camera | Punch Hole 16 MP f/2.4 | |
| Flash | Yes, LED | |
| Features | Night, Photo, Video, PRO, PANO, Portrait, TIME-LAPSE, SLO-MO, Text scanner, Google Lens, Extra HD, Macro, STICKER, and Dual-view video | |
| Video | 1080p | |
| Connectivity | OPPO F21s Pro | Xiaomi Redmi Note 9 Pro |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | |
| 3G Network | Yes | HSDPA 850 / 900 / 1900 / 2100 |
| 4G Network | Yes | 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 | Yes, v5.1 | 5.0, A2DP, LE |
| Edge | Yes | Yes |
| GPRS | Yes | Yes |
| GPS | Built-in GPS, A-GPS, BeiDou, GLONASS, Galileo, QZSS | Yes, with A-GPS, GLONASS, GALILEO, BDS, NavIC |
| 5G Network | Yes | |
| Speed | HSPA 42.2/5.76 Mbps, LTE-A | |
| USB | Yes, USB-C | 2.0, Type-C 1.0 reversible connector |
| USB Features | USB on-the-go, USB Charging | |
| VoLTE | Yes, Dual Stand-By | |
| Wifi | Yes, with wifi-hotspot | |
| Selfie camera | OPPO F21s Pro | Xiaomi Redmi Note 9 Pro |
| Camera | 64 MP f/1.7 (Wide Angle) 2 MP f/2.4 (Microscope) 2 MP f/2.4 (Mono) with autofocus | |
| Video | 1080p, 720p | |
| Camera | OPPO F21s Pro | 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 F21s Pro | Xiaomi Redmi Note 9 Pro |
| 3.5 mm Jack | Yes | Yes |
| Radio | FM radio, recording | |
| Design | OPPO F21s Pro | Xiaomi Redmi Note 9 Pro |
| Colors | Aurora Blue, Glacier White, Interstellar Black | |
| Body build | Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), plastic frame | |
| Dimensions | 73.2 x 159.9 x 7.66 mm | 165.8 x 76.7 x 8.8 mm |
| Dual Sim | Yes | |
| Weight | 181 g | 209 g |
| Sim Type | Dual Sim, GSM GSM | |
| Sim Size | Nano Nano SIM | |
| Battery | OPPO F21s Pro | Xiaomi Redmi Note 9 Pro |
| Type | Non-Removable Battery | |
| Fast Charging | Yes, 33W Fast Charging | |
| Battery capacity | 4500 mAh, Li-Po Battery | 5020 mAh, Non-removable Li-Po |
| Features | OPPO F21s Pro | Xiaomi Redmi Note 9 Pro |
| Sensors | Geomagnetic Sensor, Proximity Sensor, Optical Sensor, Accelerometer, Gravity Sensor, Gyroscope, Pedometer, Compass | |
| Fingerprint Sensor | Yes, In Display | |
| Face Unlock | Yes | |
| Other | OPPO F21s Pro | Xiaomi Redmi Note 9 Pro |
| Release date | 2020, March 12 | |
| Sensors | Fingerprint (side-mounted), accelerometer, gyro, proximity, compass , Infrared port |
