| Product |
Xiaomi Redmi Note 4G
|
Vivo Y81
|
| Battery |
| Music play |
Up to 60 h |
- |
| Stand-by |
Up to 775 h (3G) |
- |
| Talk time |
Up to 38 h (3G) |
- |
| Type |
Li-Po 3100 mAh, removable |
3260 mAh, non-removable |
| Body |
| Build |
- |
Glass front (Gorilla Glass), plastic back, plastic frame |
| Dimensions |
154 x 78.7 x 9.5 mm (6.06 x 3.10 x 0.37 in) |
155.1 x 75 x 7.8 mm (6.11 x 2.95 x 0.31 in) |
| SIM |
Mini-SIM |
Nano-SIM + Nano-SIM |
| Weight |
185 g (6.53 oz) |
146.5 g (5.15 oz) |
| Comms |
| Bluetooth |
4.0, A2DP, LE |
5.0, A2DP, LE |
| NFC |
No |
No |
| Positioning |
GPS, GLONASS, BDS |
GPS, GLONASS, BDS |
| Radio |
FM radio |
No |
| USB |
microUSB 2.0, OTG |
microUSB 2.0 |
| WLAN |
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot |
Wi-Fi 802.11 b/g/n, Wi-Fi Direct |
| Display |
| Protection |
- |
Corning Gorilla Glass |
| Resolution |
720 x 1280 pixels, 16:9 ratio (~267 ppi density) |
720 x 1520 pixels, 19:9 ratio (~270 ppi density) |
| Size |
5.5 inches, 83.4 cm2 (~68.8% screen-to-body ratio) |
6.22 inches, 96.6 cm2 (~83.0% screen-to-body ratio) |
| Type |
IPS LCD |
IPS LCD |
| Features |
| Sensors |
Accelerometer, gyro, proximity, compass |
Fingerprint (rear-mounted) - only 4 GB model; accelerometer, proximity, compass |
| Launch |
| Announced |
2014, August. Released 2014, August |
2018, June. Released 2018, June |
| Status |
Discontinued |
Discontinued |
| Main Camera |
| Features |
LED flash, HDR |
LED flash, HDR, panorama |
| Single |
13 MP, f/2.2, 28mm (wide), AF |
13 MP, f/2.2, PDAF |
| Video |
1080p@30fps |
1080p@30fps |
| Memory |
| Card slot |
microSDXC (dedicated slot) |
microSDXC (dedicated slot) |
| Internal |
8GB 2GB RAM |
32GB 3GB RAM, 32GB 4GB RAM |
|
eMMC 4.5 |
eMMC 5.1 |
| Misc |
| Colors |
Black/White |
Black, Gold |
| Models |
- |
1808, 1803, V1732A, 1808i |
| Network |
| 2G bands |
GSM 900 / 1800 - India |
GSM 850 / 900 / 1800 / 1900 |
| 3G bands |
HSDPA 900 / 2100 - India |
HSDPA 850 / 900 / 2100 |
| 4G bands |
3, 40 - India |
1, 3, 5, 7, 8, 34, 38, 39, 40, 41 |
| Speed |
HSPA, LTE Cat4 150/50 Mbps |
HSPA, LTE |
| Technology |
GSM / HSPA / LTE |
GSM / CDMA / HSPA / LTE |
|
1, 2, 3, 4, 7 - Malaysia, Singapore |
CDMA 800 & TD-SCDMA |
| Platform |
| Chipset |
Qualcomm MSM8928 Snapdragon 400 (28 nm) |
Mediatek MT6762 Helio P22 (12 nm) |
| CPU |
Quad-core 1.6 GHz Cortex-A7 |
Octa-core 2.0 GHz Cortex-A53 |
| GPU |
Adreno 305 |
PowerVR GE8320 |
| OS |
Android 4.2 (Jelly Bean), upgradable to 4.4.2 (KitKat), MIUI 5 |
Android 8.1 (Oreo), Funtouch 4 |
| Selfie camera |
| Single |
5 MP |
5 MP, f/2.2 |
| Video |
720p |
|
| Sound |
| 3.5mm jack |
Yes |
Yes |
| Loudspeaker |
Yes |
Yes |
