| Product |
Vivo Y81i
|
Xiaomi Redmi 7A
|
| Battery |
| Charging |
- |
10W wired |
| Type |
3260 mAh, non-removable |
Li-Po 4000 mAh, non-removable |
| Body |
| Build |
Glass front (Gorilla Glass), plastic back, plastic frame |
Glass front, plastic back, plastic frame |
| Dimensions |
155.1 x 75 x 7.8 mm (6.11 x 2.95 x 0.31 in) |
146.3 x 70.4 x 9.6 mm (5.76 x 2.77 x 0.38 in) |
| SIM |
Nano-SIM + Nano-SIM |
Nano-SIM + Nano-SIM |
| Weight |
143 g (5.04 oz) |
165 g (5.82 oz) |
|
- |
Splash resistant |
| Comms |
| Bluetooth |
5.0, A2DP, LE |
4.2, A2DP, LE |
| NFC |
No |
No |
| Positioning |
GPS, GLONASS, BDS |
GPS, GLONASS, BDS |
| Radio |
FM radio |
FM Radio, built-in antenna |
| USB |
microUSB 2.0, OTG |
microUSB 2.0, OTG |
| WLAN |
Wi-Fi 802.11 b/g/n, Wi-Fi Direct |
Wi-Fi 802.11 b/g/n, Wi-Fi Direct |
| Display |
| Protection |
Corning Gorilla Glass |
- |
| Resolution |
720 x 1520 pixels, 19:9 ratio (~270 ppi density) |
720 x 1440 pixels, 18:9 ratio (~295 ppi density) |
| Size |
6.22 inches, 96.6 cm2 (~83.0% screen-to-body ratio) |
5.45 inches, 76.7 cm2 (~74.4% screen-to-body ratio) |
| Type |
IPS LCD |
IPS LCD |
| Features |
| Sensors |
Accelerometer, proximity, compass |
Accelerometer, proximity, compass |
| Launch |
| Announced |
2018, October. Released 2018, November |
2019, May 24. Released 2019, July 04 |
| Status |
Discontinued |
Discontinued |
| Main Camera |
| Features |
LED flash, HDR, panorama |
LED flash, HDR |
| Single |
13 MP, f/2.2, PDAF |
|
| Video |
1080p@30fps |
1080p@30fps |
| Memory |
| Card slot |
microSDXC (dedicated slot) |
microSDXC (dedicated slot) |
| Internal |
16GB 2GB RAM |
16GB 2GB RAM, 32GB 2GB RAM, 32GB 3GB RAM |
|
eMMC 5.1 |
eMMC 5.1 |
| Misc |
| Colors |
Black, Red |
Matte Black, Morning blue, Matte Blue, Matte Gold, Gem Red, Gem Blue |
| Models |
1812, 1812_19 |
MZB7995IN, M1903C3EG, M1903C3EH, M1903C3EI |
| SAR |
- |
|
| SAR EU |
- |
|
| Network |
| 2G bands |
GSM 850 / 900 / 1800 / 1900 |
GSM 850 / 900 / 1800 / 1900 |
| 3G bands |
HSDPA 850 / 900 / 2100 |
HSDPA 850 / 900 / 1900 / 2100 |
| 4G bands |
1, 3, 5, 7, 8, 38, 40, 41 |
1, 2, 3, 4, 5, 7, 8, 20, 38, 40 - Global |
| Speed |
HSPA 21.1/5.76 Mbps, LTE (2CA) Cat7 300/150 Mbps |
HSPA, LTE |
| Technology |
GSM / HSPA / LTE |
GSM / HSPA / LTE |
|
- |
1, 3, 5, 8, 34, 38, 39, 40, 41 - China |
| Platform |
| Chipset |
Mediatek MT6761 Helio A22 (12 nm) |
Qualcomm SDM439 Snapdragon 439 (12 nm) |
| CPU |
Quad-core 2.0 GHz Cortex-A53 |
Octa-core (4x1.95 GHz Cortex-A53 & 4x1.45 GHz Cortex A53) |
| GPU |
PowerVR GE8320 |
Adreno 505 |
| OS |
Android 8.1 (Oreo), Funtouch 4 |
Android 9.0 (Pie), upgradable to Android 10, MIUI 12 |
| Selfie camera |
| Features |
- |
HDR |
| Single |
5 MP, f/2.2 |
|
| Video |
|
1080p@30fps |
| Sound |
| 3.5mm jack |
Yes |
Yes |
| Loudspeaker |
Yes |
Yes |
