Samsung Galaxy S21 5G vs vivo X51 5G
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| PHONES | ||
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| Phone Names | Samsung Galaxy S21 5G | vivo X51 5G |
| Network | ||
|---|---|---|
| 2G bands | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 |
| 3G bands | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 |
| 4G bands | 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, 17, 18, 19, 20, 26, 28, 32, 38, 39, 40, 41, 66 |
| 5G bands | 2, 5, 25, 41, 66, 71, 260, 261 SA/NSA/Sub6/mmWave - SM-G991U1 | 1, 3, 7, 8, 28, 38, 41, 77, 78 SA/NSA |
| Speed | HSPA 42.2/5.76 Mbps, LTE (7CA) Cat20 2000/200 Mbps, 5G (5+ Gbps DL) | HSPA, LTE, 5G |
| Technology | GSM / CDMA / HSPA / EVDO / LTE / 5G | GSM / CDMA / HSPA / LTE / 5G |
| 1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78 SA/NSA/Sub6 - SM-G991B | CDMA 800 | |
| Launch | ||
|---|---|---|
| Announced | 2021, January 14 | 2020, October 21. Released 2020, October 23 |
| Status | Available. Released 2021, January 29 | Discontinued |
| Body | ||
|---|---|---|
| Build | Glass front (Gorilla Glass Victus), plastic back, aluminum frame | Glass front, glass back, aluminum frame |
| Dimensions | 151.7 x 71.2 x 7.9 mm (5.97 x 2.80 x 0.31 in) | 158.5 x 72.8 x 8 mm (6.24 x 2.87 x 0.31 in) |
| Keyboard | - | QWERTY |
| 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) | 181.5 g (6.42 oz) |
| IP68 dust/water resistant (up to 1.5m for 30 min) | - | |
| Display | ||
|---|---|---|
| Protection | Corning Gorilla Glass Victus | - |
| Resolution | 1080 x 2400 pixels, 20:9 ratio (~421 ppi density) | 1080 x 2376 pixels (~398 ppi density) |
| Size | 6.2 inches, 94.1 cm2 (~87.2% screen-to-body ratio) | 6.56 inches, 104.6 cm2 (~90.6% screen-to-body ratio) |
| Type | Dynamic AMOLED 2X, 120Hz, HDR10+, 1300 nits (peak) | AMOLED, 90Hz, HDR10+ |
| Always-on display | - | |
| Platform | ||
|---|---|---|
| CPU | Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - InternationalOcta-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55) - USA/China | Octa-core (1x2.4 GHz Kryo 475 Prime & 1x2.2 GHz Kryo 475 Gold & 6x1.8 GHz Kryo 475 Silver) |
| Chipset | Exynos 2100 (5 nm) - InternationalQualcomm SM8350 Snapdragon 888 5G (5 nm) - USA/China | Qualcomm SM7250 Snapdragon 765G 5G (7 nm) |
| GPU | Mali-G78 MP14 - InternationalAdreno 660 - USA/China | Adreno 620 |
| OS | Android 11, up to 4 major Android upgrades, One UI 6.1 | Android 10, Funtouch 10.0 |
| Memory | ||
|---|---|---|
| Card slot | No | No |
| Internal | 128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM | 256GB 8GB RAM |
| UFS 3.1 | UFS 2.1 | |
| Main Camera | ||
|---|---|---|
| Features | LED flash, auto-HDR, panorama | Laser AF, color spectrum sensor, Dual-LED dual-tone flash, HDR, panorama |
| Quad | - | 48 MP, f/1.6, (wide), PDAF, gimbal OIS 8 MP, f/3.4, 135mm (periscope telephoto), 1/4.0", PDAF, OIS, 5x optical zoom 13 MP, f/2.5, 50mm (telephoto), 1/2.8", 0.8µm, PDAF, 2x optical zoom 8 MP, f/2.2, 120˚, 16mm (ultrawide), 1/4.0", 1.12µm |
| Single | - | 3.15 MP |
| Triple | 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 | - |
| Video | 8K@24fps, 4K@30/60fps, 1080p@30/60/120/240fps, HDR10+, stereo sound rec., gyro-EIS | 4K@30fps, 1080p@30fps, gyro-EIS |
| Selfie camera | ||
|---|---|---|
| Features | HDR | HDR |
| Single | 10 MP, f/2.2, 26mm (wide), 1/3.24", 1.22µm, dual pixel PDAF | 32 MP, f/2.5, 26mm (wide), 1/2.8", 0.8µm |
| Video | 4K@30/60fps, 1080p@30fps | 1080p@30fps |
| Sound | ||
|---|---|---|
| 3.5mm jack | No | No |
| 35mm jack | No | No |
| Loudspeaker | Yes, with stereo speakers | Yes |
| 32-bit/384kHz audio Tuned by AKG | 32-bit/192kHz audio | |
| Comms | ||
|---|---|---|
| Bluetooth | 5.0, A2DP, LE | 5.1, A2DP, LE, aptX HD |
| 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 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct |
| Features | ||
|---|---|---|
| Browser | - | HTML |
| Sensors | Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer | Fingerprint (under display, optical), accelerometer, gyro, proximity, compass |
| Samsung DeX, Samsung Wireless DeX (desktop experience support) Bixby natural language commands and dictation Samsung Pay (Visa, MasterCard certified) | - | |
| Battery | ||
|---|---|---|
| Charging | 25W wired, PD3.0 15W wireless (Qi) 4.5W reverse wireless | 33W wired, 57% in 30 min |
| Music play | - | Up to 5 h |
| Stand-by | - | Up to 312 h |
| Talk time | - | Up to 3 h |
| Type | Li-Ion 4000 mAh | 4315 mAh |
| Misc | ||
|---|---|---|
| Colors | Phantom Gray, Phantom White, Phantom Violet, Phantom Pink | Gray |
| Models | SM-G991B, SM-G991B/DS, SM-G991U, SM-G991U1, SM-G991W, SM-G991N, SM-G9910, SM-G991Q, SCG09 | XE710 |
| Price | € 194.00 / $ 153.58 / £ 149.99 | About 760 EUR |
| SAR | 0.74 W/kg (head) 1.08 W/kg (body) | 0.35 W/kg (head) 0.95 W/kg (body) |
| SAR EU | 0.46 W/kg (head) 1.51 W/kg (body) | 0.20 W/kg (head) |
| Pricing | ||
|---|---|---|
| 128GB 8GB RAM | $ 249.00 | - |
| 256GB 8GB RAM | $ 289.99 | $ 885.00 |
| RENEWED | $ 317.00 | - |
| Tests | ||
|---|---|---|
| Battery life | Endurance rating 93h | - |
| Camera | Photo / Video | - |
| Display | Contrast ratio: Infinite (nominal) | - |
| Loudspeaker | -26.4 LUFS (Good) | - |
| Performance | AnTuTu: 584055 (v8) GeekBench: 3238 (v5.1) GFXBench: 60fps (ES 3.1 onscreen) | - |
| OUR TESTS | ||
|---|---|---|
| Battery (old) | Endurance rating 93h | - |
| Camera | Photo / Video | - |
| Display | 856 nits max brightness (measured) | - |
| Loudspeaker | -26.4 LUFS (Good) | - |
| Performance | AnTuTu: 584055 (v8) GeekBench: 3238 (v5.1) GFXBench: 60fps (ES 3.1 onscreen) | - |