Xiaomi Redmi Note 5 Pro has better RAM than Vivo Y81. In terms of display resolution, Xiaomi Redmi Note 5 Pro has better resolution of 2160 x 1080 than Vivo Y81 which has resolution of 720 x 1520. Xiaomi Redmi Note 5 Pro has more internal memory than Vivo Y81
| Name | Xiaomi Redmi Note 5 Pro | Vivo Y81 | 
| RAM | 4 GB | 3 GB | 
|---|---|---|
| Display | 5.99 in | 6.22 in | 
| Internal Memory | 64 GB | 32 GB | 
| Battery | 4000 mAh | 3260 mAh | 
| Camera | 12 MP + 5 MP Dual | 13 MP | 
| Price | Rs. 10499 | Rs. 8050 | 
The launch Date of the first phone is February, 2018. The cost of Xiaomi Redmi Note 5 Pro is Rs. 10499. The cost of Vivo Y81 is Rs. 8050.
Vivo Y81 has larger screen size of 6.22 inches in comparison to Xiaomi Redmi Note 5 Pro's 5.99 inch screen. There is IPS LCD Screen Type in both the phones. Xiaomi's phone has display density of 403 PPI & Vivo's phone has only 270 PPI display density. Xiaomi Redmi Note 5 Pro has 18:9 aspect ratio where as Vivo Y81 has 19:9 aspect ratio.
Xiaomi Redmi Note 5 Pro's larger 4 GB RAM is better for playing games and all with respect to Vivo Y81's lower 3 GB RAM. Xiaomi Redmi Note 5 Pro has more Internal Memory (64 GB) than Vivo Y81 (32 GB).
Vivo Y81's 13 MP Rear Camera outshines Xiaomi Redmi Note 5 Pro's 12 MP + 5 MP Dual Rear Camera in terms of resolution. Xiaomi Redmi Note 5 Pro will be better choice if you're looking to click lot of selfies as it has better 20 MP Front Camera in comparison to Vivo Y81's 5 MP Front Camera.
Both the phones has Android Operating System but the first one runs on version 7.1.2 and the second one on v8.1 version.
| Name | Xiaomi Redmi Note 5 Pro | Vivo Y81 | 
| General | ||
| Model | Redmi Note 5 Pro | Y81 | 
| Sim Type | Dual Sim, GSM+GSM (Hybrid Slot) | Dual Sim, GSM+GSM | 
| Dual Sim | Yes | Yes | 
| Sim Size | Nano+Nano SIM | Nano+Nano SIM | 
| Device Type | Smartphone | Smartphone | 
| Release Date | February, 2018 | |
| Design | ||
| Dimensions | 75.4 x 158.6 x 8.1 mm | 155.1 x 75 x 7.8 mm | 
| Weight | 181 g | 146.5 g | 
| Display | ||
| Type | Color IPS LCD Screen (16M colors Colors) | Color IPS LCD Screen (16M Colors) | 
| Touch | Yes | Yes | 
| Size | 5.99 inches, 1080 x 2160 pixels | 6.22 inches, 1520 x 720 pixels | 
| Aspect Ratio | 18:9 | 19:9 | 
| PPI | ~ 403 PPI | ~ 270 PPI | 
| Screen to Body Ratio | ~ 77.4% | |
| Features | Corning Gorilla Glass | |
| Notch | Yes, Small Notch | |
| Memory | ||
| RAM | 4 GB | 3 GB | 
| Storage | 64 GB | 32 GB | 
| Card Slot | Yes, (Hybrid Slot), upto 128 GB | Yes, upto 256 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, v5.0 | Yes, v5.0 | 
| USB | Yes, microUSB v2.0 | Yes, microUSB v2.0 | 
| USB Features | USB on-the-go, USB Charging | USB Charging | 
| IR Blaster | Yes | |
| Extra | ||
| GPS | Yes, with A-GPS Support | Yes | 
| Fingerprint Sensor | Yes, Rear | Yes | 
| Face Unlock | Yes | Yes | 
| Sensors | Accelerometer, Gyroscope, Compass, Proximity | |
| 3.5mm Headphone Jack | Yes | Yes | 
| Camera | ||
| Rear Camera | 12 MP + 5 MP | 13 MP | 
| Auto Focus | Yes | Yes | 
| Features | Face detection, Geo tagging, Panorama, Touch to focus | HDR, Panorama | 
| Video Recording | 1080p @ 30 fps FHD | 1080p @ 30 fps FHD | 
| Flash | Yes, Dual LED | Yes, LED | 
| Front Camera | 20 MP Flash | 5 MP | 
| Technical | ||
| OS | Android v7.1.2 (Nougat), upgradable to v8.1 (Oreo) | Android v8.1 (Oreo) | 
| Chipset | Qualcomm Snapdragon 636 | MediaTek Helio P22 | 
| CPU | 1.8 GHz, Octa Core Processor | 2 GHz, Octa Core Processor | 
| GPU | Adreno 509 | PowerVR GE8320 | 
| Java | No | Yes, via 3rd party | 
| Browser | Yes, supports HTML5 | Yes, supports HTML5 | 
| Multimedia | ||
| Supports | MMS, Instant Messaging | |
| Yes, with Push Email | Yes | |
| Music | MP3, WAV, eAAC+, FLAC | MP3, WAV, eAAC+, FLAC | 
| Video | DivX, MP4 | MP4, H.264 | 
| FM Radio | Yes | No | 
| Document Reader | Yes | Yes | 
| Battery | ||
| Type | Non-Removable Battery | Non-Removable Battery | 
| Size | 4000 mAh, Li-Po Battery | 3260 mAh, Li-Po Battery | 
| Fast Charging | Yes, Quick Charge 2.0 | |