| Product |
Vivo X21
|
Xiaomi Mi Mix 2
|
| Battery |
| Charging |
18W wired |
18W wired, QC3 |
| Type |
Li-Ion 3200 mAh, non-removable |
Li-Ion 3400 mAh, non-removable |
| Body |
| Build |
Glass front (Gorilla Glass 3), aluminum back, aluminum frame |
Glass front (Gorilla Glass 4), ceramic back, aluminum frameGlass front (Gorilla Glass 4), ceramic back, ceramic frame - 128/8 GB model |
| Dimensions |
154.5 x 74.8 x 7.4 mm (6.08 x 2.94 x 0.29 in) |
151.8 x 75.5 x 7.7 mm (5.98 x 2.97 x 0.30 in) |
| SIM |
Nano-SIM + Nano-SIM |
Nano-SIM + Nano-SIM |
| Weight |
156.2 g (5.50 oz) |
185 g (6.53 oz) |
| Comms |
| Bluetooth |
5.0, A2DP, LE |
5.0, 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 |
Corning Gorilla Glass 4 |
| Resolution |
1080 x 2280 pixels, 19:9 ratio (~402 ppi density) |
1080 x 2160 pixels, 18:9 ratio (~403 ppi density) |
| Size |
6.28 inches, 98.4 cm2 (~85.2% screen-to-body ratio) |
5.99 inches, 92.6 cm2 (~80.8% screen-to-body ratio) |
| Type |
Super AMOLED |
IPS LCD |
| Features |
| Sensors |
Fingerprint (rear-mounted), accelerometer, proximity, compass |
Fingerprint (rear-mounted), accelerometer, gyro, compass, barometer |
| |
- |
Virtual proximity sensing |
| Launch |
| Announced |
2018, March. Released 2018, March |
2017, September. Released 2017, September |
| 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, panorama |
| Single |
- |
12 MP, f/2.0, 1/2.9", 1.25µm, PDAF, 4-axis OIS |
| Video |
1080p@30fps |
4K@30fps, 1080p@30fps, 720p@120fps |
| Memory |
| Card slot |
microSDXC (uses shared SIM slot) |
No |
| Internal |
64GB 6GB RAM, 128GB 6GB RAM |
64GB 6GB RAM, 128GB 6GB RAM, 128GB 8GB RAM, 256GB 6GB RAM |
| |
eMMC 5.1 |
eMMC 5.1 |
| Misc |
| Colors |
Black, Aurora White, Ruby Red |
Black, White |
| Models |
1725, X21A |
MDE5 |
| SAR |
- |
0.39 W/kg (head) 1.77 W/kg (body) |
| 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 800 / 850 / 900 / 1700(AWS) / 1800 / 1900 / 2100 |
| 4G bands |
1, 2, 3, 5, 8, 34, 38, 39, 40, 41 |
1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 27, 28, 29, 30, 34, 38, 39, 40, 41 |
| Speed |
HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps |
HSPA, LTE |
| Technology |
GSM / CDMA / HSPA / LTE |
GSM / CDMA / HSPA / EVDO / LTE |
| |
CDMA 800 & TD-SCDMA |
CDMA2000 1xEV-DO |
| Our Tests |
| Battery (old) |
- |
Endurance rating 65h |
| Camera |
- |
Photo / Video |
| Display |
- |
Contrast ratio: 1287 (nominal), 3.19 (sunlight) |
| Loudspeaker |
- |
Voice 67dB / Noise 71dB / Ring 82dB |
| Performance |
- |
GeekBench: 6234 (v4.4)
GFXBench: 24fps (ES 3.1 onscreen) |
| Platform |
| Chipset |
Qualcomm SDM660 Snapdragon 660 (14 nm) |
Qualcomm MSM8998 Snapdragon 835 (10 nm) |
| CPU |
Octa-core (4x2.2 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver) |
Octa-core (4x2.45 GHz Kryo & 4x1.9 GHz Kryo) |
| GPU |
Adreno 512 |
Adreno 540 |
| OS |
Android 8.1 (Oreo), Funtouch 4 |
Android 7.1 (Nougat), planned upgrade to Android 10, MIUI 12 |
| Selfie camera |
| Single |
12 MP, f/2.0, (wide), 1/2.8", 1.28µm |
5 MP, f/2.0 |
| Video |
1080p@30fps |
1080p@30fps |
| Sound |
| 3.5mm jack |
Yes |
No |
| Loudspeaker |
Yes |
Yes |
| |
32-bit/192kHz Hi-Res audio |
- |
