Xiaomi Redmi Note 4 has better RAM than Vivo Y66. Neither of them has front Flash. In terms of display resolution, Xiaomi Redmi Note 4 has better resolution of 1920 x 1080 than Vivo Y66 which has resolution of 1280 x 720. Xiaomi Redmi Note 4 has more internal memory than Vivo Y66
| Name | Vivo Y66 | Xiaomi Redmi Note 4 |
| RAM | 3 GB | 4 GB |
|---|---|---|
| Display | 5.5 in | 5.5 in |
| Internal Memory | 32 GB | 64 GB |
| Battery | 3000 mAh | 4100 mAh |
| Camera | 13 MP | 13 MP |
| Price | Rs. 15050 | Rs. 8999 |
The cost of Vivo Y66 is Rs. 15050. The launch Date of the second phone is January, 2017. The cost of Xiaomi Redmi Note 4 is Rs. 8999.
There is IPS Screen Type in both the phones. Xiaomi's phone has display density of 401 PPI & Vivo's phone has only 267 PPI display density. Both mobiles have same aspect ratio of 16:9.
Xiaomi Redmi Note 4's larger 4 GB RAM is better for playing games and all with respect to Vivo Y66's lower 3 GB RAM. Xiaomi Redmi Note 4 has more Internal Memory (64 GB) than Vivo Y66 (32 GB).
Vivo Y66 has 13 MP Rear Camera in comparison to Xiaomi Redmi Note 4's 13 MP Rear Camera. Vivo Y66 will be better choice if you're looking to click lot of selfies as it has better 16 MP Front Camera in comparison to Xiaomi Redmi Note 4's 5 MP Front Camera.
Both the phones has Android Operating System but the first one runs on version 6.0 and the second one on v6.0 version.
| Name | Vivo Y66 | Xiaomi Redmi Note 4 |
| General | ||
| Model | Redmi Note 4 | |
| Sim Type | Dual Sim, GSM+GSM | Dual Sim, GSM+GSM (Hybrid Slot) |
| Dual Sim | Yes | Yes |
| Sim Size | Micro+Nano SIM | Micro+Nano SIM |
| Device Type | Smartphone | Smartphone |
| Release Date | January, 2017 | |
| Design | ||
| Dimensions | 76 x 151 x 8.5 mm | |
| Weight | 155 g | 165 g |
| Display | ||
| Type | Color IPS Screen | Color IPS Screen (16M colors Colors) |
| Touch | Yes | Yes |
| Size | 5.5 inches, 720 x 1280 pixels | 5.5 inches, 1080 x 1920 pixels |
| Aspect Ratio | 16:9 | 16:9 |
| PPI | ~ 267 PPI | ~ 401 PPI |
| Features | 2.5D Glass | |
| Memory | ||
| RAM | 3 GB | 4 GB |
| Storage | 32 GB | 64 GB |
| Card Slot | Yes, upto 128 GB | Yes, (Hybrid Slot), upto 128 GB |
| Connectivity | ||
| GPRS | Yes | Yes |
| EDGE | Yes | Yes |
| 3G | Yes | Yes |
| 4G | Yes | Yes |
| VoLTE | Yes | Yes |
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot |
| Bluetooth | Yes, v4.0 | Yes, v4.1 |
| USB | Yes, microUSB v2.0 | |
| USB Features | USB on-the-go | |
| Extra | ||
| GPS | Yes, with A-GPS Support | |
| Fingerprint Sensor | No | Yes, Rear |
| Sensors | Accelerometer, Compass | Accelerometer, Gyroscope, Compass |
| 3.5mm Headphone Jack | Yes | Yes |
| Camera | ||
| Rear Camera | 13 MP | 13 MP ƒ/2 |
| Auto Focus | Yes | |
| Features | Face detection, Touch to focus | Face detection, Geo tagging, Panorama, Touch to focus |
| Video Recording | 1080p @ 30 fps FHD | |
| Flash | Yes, LED | Yes, Dual LED |
| Front Camera | 16 MP | 5 MP ƒ/2 |
| Technical | ||
| OS | Android v6.0 (Marshmallow) | Android v6.0 (Marshmallow), upgradable to v7.0 (Nougat) |
| Chipset | Qualcomm Snapdragon MSM8937 | Qualcomm Snapdragon 625 |
| CPU | 1.4 GHz, Octa Core Processor | 2 GHz, Octa Core Processor |
| GPU | Adreno 505 | Adreno 506 |
| Java | Yes, via 3rd party | No |
| Browser | Yes, supports HTML | |
| Multimedia | ||
| Supports | MMS, Instant Messaging | |
| Yes, with Push Email | ||
| Music | MP3, WAV, eAAC+ | |
| Video | XviD, MP4 | |
| FM Radio | No | Yes |
| Document Reader | Yes | |
| Battery | ||
| Type | Non-Removable Battery | Non-Removable Battery |
| Size | 3000 mAh, Li-ion Battery | 4100 mAh, Li-Po Battery |