| Product |
Vivo X21 UD
|
Xiaomi Mi Mix
|
| Battery |
| Charging |
18W wired |
18W wired, QC3 |
| Type |
Li-Ion 3200 mAh, non-removable |
Li-Ion 4400 mAh, non-removable |
| Body |
| Build |
Glass front (Gorilla Glass 3), aluminum back, aluminum frame |
Glass front, ceramic back, ceramic frame |
| Dimensions |
154.5 x 74.8 x 7.4 mm (6.08 x 2.94 x 0.29 in) |
158.8 x 81.9 x 7.9 mm (6.25 x 3.22 x 0.31 in) |
| SIM |
Nano-SIM + Nano-SIM |
Nano-SIM + Nano-SIM |
| Weight |
156.2 g (5.50 oz) |
209 g (7.37 oz) |
| Comms |
| Bluetooth |
5.0, A2DP, LE |
4.2, A2DP, LE |
| NFC |
No |
Yes |
| Positioning |
GPS, GLONASS |
GPS, GLONASS, BDS |
| Radio |
FM radio |
No |
| USB |
microUSB 2.0, OTG |
USB Type-C |
| 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 2040 pixels, 17:9 ratio (~362 ppi density) |
| Size |
6.28 inches, 98.4 cm2 (~85.2% screen-to-body ratio) |
6.4 inches, 108.7 cm2 (~83.6% screen-to-body ratio) |
| Type |
Super AMOLED |
IPS LCD |
| Features |
| Sensors |
Fingerprint (under display, optical), accelerometer, proximity, compass |
Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass, barometer |
| Launch |
| Announced |
2018, March. Released 2018, March |
2016, October. Released 2016, November |
| Status |
Discontinued |
Discontinued |
| Main Camera |
| Dual |
12 MP, f/1.8, 1/2.55", 1.4µm, dual pixel PDAF
5 MP, f/2.4, (depth) |
- |
| Features |
LED flash, HDR, panorama |
Dual-LED dual-tone flash, HDR |
| Single |
- |
16 MP, f/2.0, 1/3.0", 1.0µm, PDAF |
| Video |
1080p@30fps |
4K@30fps, 1080p@30fps (gyro-EIS), 720p@120fps |
| Memory |
| Card slot |
microSDXC (uses shared SIM slot) |
No |
| Internal |
128GB 6GB RAM |
128GB 4GB RAM, 256GB 6GB RAM |
| |
eMMC 5.1 |
- |
| Misc |
| Colors |
Black, Ruby Red |
Black, White |
| Models |
X21UD A |
MIX |
| Network |
| 2G bands |
GSM 850 / 900 / 1800 / 1900 |
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 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, 2, 3, 4, 5, 7, 8, 38, 39, 40, 41 |
| Speed |
HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps |
HSPA 42.2/5.76 Mbps, LTE (3CA) Cat12 600/150 Mbps |
| Technology |
GSM / CDMA / HSPA / LTE |
GSM / HSPA / LTE |
| |
CDMA 800 & TD-SCDMA |
- |
| Our Tests |
| Audio quality |
- |
Noise -94.6dB / Crosstalk -94.3dB |
| Battery (old) |
- |
Endurance rating 97h |
| Camera |
- |
Photo / Video |
| Display |
- |
Contrast ratio: 1489:1 (nominal), 2.658 (sunlight) |
| Loudspeaker |
- |
Voice 64dB / Noise 72dB / Ring 86dB |
| Performance |
- |
GFXBench: 17fps (ES 3.1 onscreen) |
| Platform |
| Chipset |
Qualcomm SDM660 Snapdragon 660 (14 nm) |
Qualcomm MSM8996 Snapdragon 821 (14 nm) |
| CPU |
Octa-core (4x2.2 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver) |
Quad-core (2x2.35 GHz Kryo & 2x2.19 GHz Kryo) |
| GPU |
Adreno 512 |
Adreno 530 |
| OS |
Android 8.1 (Oreo), Funtouch 4 |
Android 6.0 (Marshmallow), upgradable to 8.0 (Oreo), MIUI 10 |
| Selfie camera |
| Single |
12 MP, f/2.0, (wide), 1/2.8", 1.28µm |
5 MP, f/2.2 |
| Video |
1080p@30fps |
1080p@30fps |
| Sound |
| 3.5mm jack |
Yes |
Yes |
| Loudspeaker |
Yes |
Yes |
| |
32-bit/192kHz Hi-Res audio |
- |
