| Product |
Vivo X21 UD
|
Xiaomi Black Shark 2
|
| Battery |
| Charging |
18W wired |
27W wired |
| Type |
Li-Ion 3200 mAh, non-removable |
Li-Ion 4000 mAh, non-removable |
| Body |
| Build |
Glass front (Gorilla Glass 3), aluminum back, aluminum frame |
Glass front, aluminum back, aluminum frame |
| Dimensions |
154.5 x 74.8 x 7.4 mm (6.08 x 2.94 x 0.29 in) |
163.6 x 75 x 8.8 mm (6.44 x 2.95 x 0.35 in) |
| SIM |
Nano-SIM + Nano-SIM |
Nano-SIM + Nano-SIM |
| Weight |
156.2 g (5.50 oz) |
205 g (7.23 oz) |
| Comms |
| Bluetooth |
5.0, A2DP, LE |
5.0, A2DP, aptX HD, LE |
| NFC |
No |
No |
| Positioning |
GPS, GLONASS |
GPS, GLONASS, BDS |
| Radio |
FM radio |
No |
| USB |
microUSB 2.0, OTG |
USB Type-C 2.0 |
| WLAN |
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct |
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct |
| Display |
| Protection |
Corning Gorilla Glass 3 |
- |
| Resolution |
1080 x 2280 pixels, 19:9 ratio (~402 ppi density) |
1080 x 2340 pixels, 19.5:9 ratio (~403 ppi density) |
| Size |
6.28 inches, 98.4 cm2 (~85.2% screen-to-body ratio) |
6.39 inches, 100.2 cm2 (~81.7% screen-to-body ratio) |
| Type |
Super AMOLED |
AMOLED |
| Features |
| Sensors |
Fingerprint (under display, optical), accelerometer, proximity, compass |
Fingerprint (under display, optical), accelerometer, gyro, proximity, compass |
| Launch |
| Announced |
2018, March. Released 2018, March |
2019, March. Released 2019, March |
| Status |
Discontinued |
Discontinued |
| Main Camera |
| Dual |
|
|
| Features |
LED flash, HDR, panorama |
LED flash, HDR, panorama |
| Video |
1080p@30fps |
4K@30/60fps, 1080p@30fps, 720p@120fps |
| Memory |
| Card slot |
microSDXC (uses shared SIM slot) |
No |
| Internal |
128GB 6GB RAM |
128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM |
|
eMMC 5.1 |
UFS 2.1 |
| Misc |
| Colors |
Black, Ruby Red |
Black, Silver, Blue |
| Models |
X21UD A |
SKW-H0, SKW-A0 |
| Network |
| 2G bands |
GSM 850 / 900 / 1800 / 1900 |
GSM 850 / 900 / 1800 / 1900 |
| 3G bands |
HSDPA 850 / 900 / 1900 / 2100 |
HSDPA 850 / 900 / 1900 / 2100 |
| 4G bands |
1, 2, 3, 5, 8, 34, 38, 39, 40, 41 |
1, 3, 4, 5, 7, 8, 20, 34, 38, 39, 40, 41 |
| Speed |
HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps |
HSPA 42.2/5.76 Mbps, LTE (5CA) Cat18 1200/150 Mbps |
| Technology |
GSM / CDMA / HSPA / LTE |
GSM / CDMA / HSPA / EVDO / LTE |
|
CDMA 800 & TD-SCDMA |
CDMA2000 1xEV-DO |
| Our Tests |
| Audio quality |
- |
Noise -90.7dB / Crosstalk -93.4dB |
| Battery (old) |
- |
Endurance rating 93h |
| Camera |
- |
Photo / Video |
| Display |
- |
614 nits max brightness (measured) |
| Loudspeaker |
- |
Voice 67dB / Noise 73dB / Ring 82dB |
| Performance |
- |
AnTuTu: 343460 (v7)
GeekBench: 11192 (v4.4)
GFXBench: 36fps (ES 3.1 onscreen) |
| Platform |
| Chipset |
Qualcomm SDM660 Snapdragon 660 (14 nm) |
Qualcomm SM8150 Snapdragon 855 (7 nm) |
| CPU |
Octa-core (4x2.2 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver) |
Octa-core (1x2.84 GHz Kryo 485 & 3x2.42 GHz Kryo 485 & 4x1.78 GHz Kryo 485) |
| GPU |
Adreno 512 |
Adreno 640 |
| OS |
Android 8.1 (Oreo), Funtouch 4 |
Android 9.0 (Pie), upgradable to Android 10, JoyUI 11 |
| Selfie camera |
| Features |
- |
HDR |
| Single |
|
|
| Video |
1080p@30fps |
1080p@30fps |
| Sound |
| 3.5mm jack |
Yes |
No |
| Loudspeaker |
Yes |
Yes, with stereo speakers |
|
32-bit/192kHz Hi-Res audio |
- |
