| vivo S9 |
Xiaomi Redmi Note 8 |
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| Hardware and OS | vivo S9 | Xiaomi Redmi Note 8 |
| Operating system | Android 11, OriginOS 1.0 | Android 9.0 (Pie); MIUI 10 |
| Processor | Octa-core (4x2.6 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55) | Octa-core (4x2.0 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver) |
| Chipset | MediaTek MT6891Z Dimensity 1100 5G (6 nm) | Qualcomm SDM665 Snapdragon 665 (11 nm) |
| GPU | Mali-G77 MC9 | Adreno 610 |
| Internal memory | 128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM | 32GB 3GB RAM, 64GB 4GB RAM, 64GB 6GB RAM, 128GB 4GB RAM, 128GB 6GB RAM |
| External memory | No | microSD, up to 256 GB (dedicated slot) |
| Display | vivo S9 | Xiaomi Redmi Note 8 |
| Type | AMOLED, 90Hz, HDR10 | IPS LCD |
| Size | 6.44 inches, 100.1 cm2 | 6.3" inc |
| Resolution | 1080 x 2400 pixels, 20:9 ratio | 1080 x 2340 px |
| Protection | Corning Gorilla Glass 5 | |
| Touchscreen | capacitive touchscreen | |
| Screen-to-Body Ratio | 81.7% | |
| Display area | 97.4 cm2 | |
| Display aspect ratio | 19.5:9 (height:width) | |
| Pixel Density | 409 PPI | |
| Colors | 16M | |
| Main Camera | vivo S9 | Xiaomi Redmi Note 8 |
| Camera | 64 MP, f/1.8, 26mm (wide), 1/1.72", 0.8µm, PDAF, OIS 8 MP, f/2.2, 120??, 16mm (ultrawide), 1/4.0", 1.12µm 2 MP, f/2.4, (depth) | |
| Features | Dual-LED dual-tone flash, HDR, panorama | |
| Video | 4K@30fps, 1080p@30fps, gyro-EIS | |
| Selfie camera | vivo S9 | Xiaomi Redmi Note 8 |
| Camera | 44 MP, f/2.0, (wide), AF 8 MP, f/2.3, 105?? (ultrawide) | |
| Features | HDR | |
| Video | 4K@30fps, 1080p@30fps | |
| Connectivity | vivo S9 | Xiaomi Redmi Note 8 |
| 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 / 1700(AWS) / 1900 / 2100 | HSDPA 850 / 900 / 2100 |
| 4G Network | 1, 3, 4, 5, 8, 28, 34, 38, 39, 40, 41 | LTE band 1(2100), 3(1800), 5(850), 8(900), 38(2600), 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 | |
| 5G Network | 1, 3, 28, 41, 77, 78 SA/NSA | |
| SIM card | Dual SIM (Nano-SIM, dual stand-by) | |
| Bluetooth | 5.2, A2DP, LE, aptX HD | 4.2, A2DP, LE |
| CDMA | CDMA 800 | |
| Edge | Yes | |
| GPRS | Yes | |
| GPS | Yes, with A-GPS, GLONASS, GALILEO, BDS | Yes, with A-GPS, GLONASS, BDS |
| NFC | Yes | |
| Speed | HSPA 42.2/5.76 Mbps, LTE-A, 5G | HSPA 42.2/11.5 Mbps, LTE-A |
| USB | USB Type-C, USB On-The-Go | 2.0, Type-C 1.0 reversible connector, USB On-The-Go |
| Technology | GSM / CDMA / HSPA / CDMA2000 / LTE / 5G | |
| WLAN | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot | |
| Camera | vivo S9 | Xiaomi Redmi Note 8 |
| Main camera | 48 MP, Quad | |
| Specs | 48 MP, f/1.8, 26mm (wide), 1/2", 0.8µm, PDAF -8 MP, f/2.2, 13mm (ultrawide), 1/4", 1.12µm -2 MP, f/2.4, 1/5", 1.75µm (dedicated macro camera) -2 MP, f/2.4, 1/5", 1.75µm, depth sensor | |
| Features | LED flash, HDR, panorama | |
| Video | 2160p@30fps, 1080p@30/60/120fps, gyro-EIS | |
| Selfie camera | 13 MP, Single | |
| Multimedia | vivo S9 | Xiaomi Redmi Note 8 |
| Loudspeaker | Yes | |
| Multimedia | 24-bit/192kHz audio | |
| 3.5 mm Jack | No | Yes |
| Radio | No | FM radio |
| Design | vivo S9 | Xiaomi Redmi Note 8 |
| Colors | Black, White, Gradient Blue | Neptune Blue, Moonlight White, Space Black |
| Body build | Front/back glass (Gorilla Glass 5) | |
| SIM | Dual SIM (Nano-SIM, dual stand-by) | |
| Dimensions | 158.4 x 73.9 x 7.4 mm (6.24 x 2.91 x 0.29 in) | 158.3 x 75.3 x 8.4 mm |
| Weight | 173 g (6.10 oz) | 190 g |
| Features | vivo S9 | Xiaomi Redmi Note 8 |
| Sensors | Fingerprint (under display, optical), accelerometer, gyro, proximity, compass | |
| Battery | vivo S9 | Xiaomi Redmi Note 8 |
| Type | Li-Po 4000 mAh, non-removable | |
| Charging | Fast charging 33W, 66% in 30 min (advertised) | |
| Battery capacity | 4000 mAh, Non-removable Li-Po | |
| Other | vivo S9 | Xiaomi Redmi Note 8 |
| SAR | SAR - 0.26 W/kg (head) 1.00 W/kg (body) SAR EU - 0.26 W/kg (head) 1.00 W/kg (body) | |
| Release date | 2019, August | |
| Sensors | Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass , Infrared port |
