| Product |
Vivo Y91
|
Xiaomi Mi Max 2
|
| Battery |
| Charging |
- |
18W wired, QC3 |
| Type |
4030 mAh, non-removable |
Li-Ion 5300 mAh, non-removable |
| Body |
| Build |
Glass front, plastic back, plastic frame |
Glass front (Gorilla Glass 3), aluminum back, aluminum frame |
| Dimensions |
155.1 x 75.1 x 8.3 mm (6.11 x 2.96 x 0.33 in) |
174.1 x 88.7 x 7.6 mm (6.85 x 3.49 x 0.30 in) |
| SIM |
Nano-SIM + Nano-SIM |
Nano-SIM + Micro-SIM |
| Weight |
163.5 g (5.78 oz) |
211 g (7.44 oz) |
| Comms |
| Bluetooth |
4.2, A2DP, LE |
4.2, A2DP, LE |
| Infrared port |
- |
Yes |
| NFC |
No |
No |
| Positioning |
GPS, GLONASS, BDS |
GPS, GLONASS, BDS |
| Radio |
FM radio |
FM radio |
| USB |
microUSB 2.0, OTG |
USB Type-C |
| WLAN |
Wi-Fi 802.11 b/g/n, Wi-Fi Direct |
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA |
| Display |
| Protection |
- |
Corning Gorilla Glass 3 |
| Resolution |
720 x 1520 pixels, 19:9 ratio (~270 ppi density) |
1080 x 1920 pixels, 16:9 ratio (~342 ppi density) |
| Size |
6.22 inches, 96.6 cm2 (~82.9% screen-to-body ratio) |
6.44 inches, 114.3 cm2 (~74.0% screen-to-body ratio) |
| Type |
IPS LCD |
IPS LCD |
| Features |
| Sensors |
Fingerprint (rear-mounted), accelerometer, proximity, compass |
Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass |
| Launch |
| Announced |
2018, November. Released 2018, November |
2017, May. Released 2017, June |
| Status |
Discontinued |
Discontinued |
| Main Camera |
| Dual |
13 MP, f/2.2, PDAF
2 MP, f/2.4, (depth) |
- |
| Features |
LED flash, panorama |
Dual-LED dual-tone flash, HDR, panorama |
| Single |
- |
|
| Video |
1080p@30fps |
4K@30fps, 720p@120fps |
| Memory |
| Card slot |
microSDXC (dedicated slot) |
microSDXC (uses shared SIM slot) |
| Internal |
16GB 2GB RAM, 32GB 2GB RAM, 32GB 3GB RAM |
32GB 4GB RAM, 64GB 4GB RAM, 128GB 4GB RAM |
|
eMMC 5.1 |
eMMC 5.1 |
| Misc |
| Colors |
Starry Black, Ocean Blue |
Gold, Matte Black |
| Models |
1816, 1817, 1820, 1811, PD1818BF_EX |
MDE40, MDI40 |
| SAR |
|
|
| Network |
| 2G bands |
GSM 850 / 900 / 1800 / 1900 |
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G bands |
HSDPA 850 / 900 / 2100 |
HSDPA 850 / 900 / 1900 / 2100 |
| 4G bands |
1, 3, 5, 40, 41 |
1, 3, 5, 7, 8, 38, 39, 40, 41 |
| Speed |
HSPA 42.2/5.76 Mbps, LTE Cat5 150/75 Mbps |
HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps |
| Technology |
GSM / HSPA / LTE |
GSM / CDMA / HSPA / EVDO / LTE |
|
- |
CDMA2000 1xEV-DO |
| Our Tests |
| Audio quality |
- |
Noise -93.4dB / Crosstalk -98.8dB |
| Battery (old) |
- |
Endurance rating 126h |
| Camera |
- |
Photo / Video |
| Display |
- |
Contrast ratio: 1294:1 (nominal), 2.561 (sunlight) |
| Loudspeaker |
- |
Voice 78dB / Noise 71dB / Ring 79dB |
| Performance |
- |
GeekBench: 2445 (v4.4)
GFXBench: 3.5fps (ES 3.1 onscreen) |
| Platform |
| Chipset |
Qualcomm SDM439 Snapdragon 439 (12 nm) |
Qualcomm MSM8953 Snapdragon 625 (14 nm) |
| CPU |
Octa-core (4x1.95 GHz Cortex-A53 & 4x1.45 GHz Cortex A53) |
Octa-core 2.0 GHz Cortex-A53 |
| GPU |
Adreno 505 |
Adreno 506 |
| OS |
Android 8.1 (Oreo), Funtouch 4.5 |
Android 7.1.1 (Nougat), MIUI 11 |
| Selfie camera |
| Single |
8 MP, f/1.8 |
5 MP, f/2.0 |
| Video |
1080p@30fps |
1080p@30fps |
| Sound |
| 3.5mm jack |
Yes |
Yes |
| Loudspeaker |
Yes |
Yes, with stereo speakers |
