DailyTechPricesDevice Comparison
| Galaxy S21 | Redmi Note 17 | |
|---|---|---|
| LAUNCH DATE | ||
| Announced | January 29, 2021 | 2026, August 27 |
| Released | 2021-01-29 | 2026-08-28 |
| Status | Available | Available |
| NETWORK | ||
| 2G Bands | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM: 850 900 1800 1900MHz |
| 3G Bands | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100; CDMA2000 1xEV-DO | WCDMA:1/2/4/5/8 |
| 4G LTE | 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 38, 39, 40, 41, 46, 48, 66, 71 - SM-G991U1; 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66 - SM-G991B | LTE FDD:1/2/3/4/5/7/8/12/17/18/19/20/26/28/32/66; LTE TDD: 38/40/41/42/48 |
| 5G | 2, 5, 25, 41, 66, 71, 260, 261 SA/NSA/Sub6/mmWave - SM-G991U1; 1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78 SA/NSA/Sub6 - SM-G991B | SA: n1/2/3/5/7/8/12/20/26/28/38/40/41/48/66/77/78; NSA: n1/2/3/5/7/8/20/28/38/40/41/66/77/78 |
| Speed | LTE, 5G | LTE, 5G |
| Technology | 5G/4G/LTE/GSM | 5G / 4G / 3G / 2G |
| BODY | ||
| Build | Glass front (Gorilla Glass Victus), plastic back, aluminum frame | Glass front, plastic back, plastic frame |
| Dimensions | 151.7 x 71.2 x 7.9 mm (5.97 x 2.80 x 0.31 in) | 169.70 x 79.14 x 8.45 mm |
| IP Rating | IP68 dust/water resistant (up to 1.5m for 30 min) | IP65 |
| SIM | Nano-SIM + eSIM Nano-SIM + Nano-SIM + eSIM (max 2 at a time) | Nano-SIM + Nano-SIM |
| Weight | 169 g (Sub6), 171 g (mmWave) (5.96 oz) | 225g |
| DISPLAY | ||
| Brightness | 1300 nits (peak) | Brightness: 1800 nits peak brightness, 1200 nits HBM, 700 nits (typ) |
| Color | — | DCI-P3 wide color gamut |
| Features | — | Sunlight display; Reading mode |
| Protection | Corning Gorilla Glass Victus | Corning Gorilla Glass 7i, Mohs level 5 |
| Refresh Rate | 120Hz | Up to 120Hz |
| Resolution | 1080 x 2400 pixels, 20:9 ratio (~421 ppi density) | 1080 x 2396 pixels (~375 ppi density) |
| Screen-to-body | ~87.2% | ~88.4% |
| Size | 6.2 inches, 94.1 cm2 (~87.2% screen-to-body ratio) | 6.99" |
| Type | Dynamic AMOLED 2X, 120Hz, HDR10+, 1300 nits (peak) | AMOLED |
| PLATFORM | ||
| CPU | Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55) - USA/China | Octa-core, up to 2.3 GHz |
| Chipset | Exynos 2100 (5 nm) - International / Qualcomm SM8350 Snapdragon 888 5G (5 nm) - USA/China | Snapdragon 4 Gen 4 |
| GPU | Mali-G78 MP14 - International Adreno 660 - USA/China | Adreno |
| OS | Android 11, up to 4 major Android upgrades, One UI 6.1 | Xiaomi HyperOS 3 |
| MEMORY | ||
| Card slot | No | Expandable storage up to 2TB |
| Internal | 128GB, 256GB | 128GB / 256GB |
| RAM | 6GB RAM, 8GB RAM | 6 GB / 8 GB |
| Storage Type | — | LPDDR4X + UFS2.2 |
| Storage/RAM variants | 128GB, 256GB; 6GB RAM, 8GB RAM | 128GB / 256GB; 6 GB / 8 GB RAM |
| MAIN CAMERA | ||
| Features | LED flash, auto-HDR, panorama | LED flash, HDR, panorama |
| MAIN CAMERA | 12 MP, f/1.8, 26mm (wide), 1/1.76", 1.8µm, dual pixel PDAF, OIS 64 MP, f/2.0, 29mm (telephoto), 1/1.72", 0.8µm, PDAF, OIS, 1.1x optical zoom, 3x hybrid zoom 12 MP, f/2.2, 13mm, 120˚ (ultrawide), 1/2.55" 1.4µm, Super Steady video | 50MP main camera, f/1.8 |
| Video | 8K@24fps, 4K@30/60fps, 1080p@30/60/120/240fps, HDR10+, stereo sound rec., gyro-EIS | 1080p (1920 × 1080) HD video recording at 30 fps; 720p (1280 × 720) HD video recording at 30 fps |
| SELFIE CAMERA | ||
| Features | HDR | HDR |
| Selfie camera | 10 MP, f/2.2, 26mm (wide), 1/3.24", 1.22µm, dual pixel PDAF | 16MP front camera, f/2.5 |
| Video | 4K@30/60fps, 1080p@30fps | 1080p at 30fps; 720p at 30fps |
| SOUND | ||
| 3.5mm jack | No | Yes |
| Loudspeaker | Yes, with stereo speakers | Yes, with stereo speakers |
| COMMUNICATION | ||
| Bluetooth | 5.0, A2DP, LE | 5.1 |
| NFC | Yes | Yes |
| Positioning | GPS, GLONASS, BDS, GALILEO | GPS, GLONASS, Galileo, BDS |
| Radio | FM radio (Snapdragon model only; market/operator dependent) | No |
| USB | USB Type-C 3.2, OTG | USB Type-C 2.0, OTG |
| WLAN | Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct | Wi-Fi Protocol: 802.11a/b/g/n/ac |
| FEATURES | ||
| Ai | — | AI Erase Pro, AI Sky, AI Image Expansion; Circle to Search with Google, Google Gemini |
| Sensors | Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer | Virtual Proximity sensor; Ambient light sensor; Accelerometer; Electronic compass; IR blaster |
| BATTERY | ||
| Capacity | 4000 mAh | 7700mAh (typ) |
| Charging Type | 25W wired, PD3.0 15W wireless (Qi) 4.5W reverse wireless | 45W turbo charging |
| Type | Li-Ion 4000 mAh | 7700 mAh, non-removable |
| ADDITIONAL INFORMATION | ||
| Colors | Phantom Gray, Phantom White, Phantom Violet, Phantom Pink | Black; Celestial Purple |
| Compatibility | — | Global specification set |
| Launch Price (USD) | $250.00 (reference only — see Price in Nigeria above for the actual retail price) | — |
| Models | SM-G991B, SM-G991B/DS, SM-G991U, SM-G991U1, SM-G991W, SM-G991N, SM-G9910, SM-G991Q, SCG09 | 26081RA18G, 26081RA18L |
| Price in Nigeria | ₦382,500 | ₦330,000 |
| SECURITY | ||
| Security | Biometric security: Fingerprint (under display, ultrasonic). | In-screen fingerprint sensor; AI face unlock |