Poco M8x 5G vs Vivo Y31 5G
Compare Poco M8x 5G and Vivo Y31 5G to understand which one suits your needs the best. The Poco M8x 5G is priced from ₹18,999, while Vivo Y31 5G is available at ₹19,991 respectively. In terms of performance and features, each device offers a unique combination of processor, display, camera, and battery capabilities. Explore their complete specifications and key differences side-by-side to make a well-informed buying decision.
Poco M8x 5G vs Vivo Y31 5G Comparison Overview
| Key Highlights | Poco M8x 5G | Vivo Y31 5G |
|---|---|---|
| Price | ₹18,999 | ₹19,991 |
| Processor | Qualcomm Snapdragon 4 Gen 5 | Qualcomm Snapdragon 4 Gen 2 |
| Display | 6.9 inches, HD+ IPS LCD, 120Hz | 6.68 inches, HD+ LCD, 120Hz |
| Rear Camera | 50MP (Wide-angle), 0.08MP (Auxiliary), 8MP (Front) | 50MP (Wide-angle), 0.08MP (Auxiliary), 8MP (Front) |
| Battery | 7900mAh, 45W, Charger in the box | 6500mAh, 44W, Charger in the box |
| RAM/Storage | 4GB (LPDDR4X), 128GB (UFS 2.2) | 4GB (LPDDR4X), 128GB (eMMC 5.1) |
Reasons To Consider
Key Specifications
| Processor | Qualcomm Snapdragon 4 Gen 5 | Qualcomm Snapdragon 4 Gen 2 | ||
|---|---|---|---|---|
| Display | 6.9 inches, HD+ IPS LCD, 120Hz | 6.68 inches, HD+ LCD, 120Hz | ||
| Camera | 50MP (Wide-angle), 0.08MP (Auxiliary), 8MP (Front) | 50MP (Wide-angle), 0.08MP (Auxiliary), 8MP (Front) | ||
| Battery | 7900mAh, 45W, Charger in the box | 6500mAh, 44W, Charger in the box | ||
| RAM | 4GB (LPDDR4X) | 4GB (LPDDR4X) | ||
| Storage | 128GB (UFS 2.2) | 128GB (eMMC 5.1) |
General
| Box Contents | Phone, 45W Charger, Type-C Cable, SIM Ejector Tool | Phone, 44W Charger, Type-C Cable, SIM Ejector Tool, Case | ||
|---|---|---|---|---|
| Launch Price | ₹20,999 | ₹14,999 |
Display
🏆 Winner: Vivo Y31 5G
| Display Type | IPS LCD | LCD | ||
|---|---|---|---|---|
| Refresh Rate | 120Hz | 120Hz | ||
| Playback Quality | SDR | SDR | ||
| Touch Sampling Rate | 240Hz | - | ||
| Display Size | 6.9 inches | 6.68 inches | ||
| Area | 114.9 cm² | 107.4 cm² | ||
| Display Form Factor | Flat Display | Flat Display | ||
| Screen to Body Ratio | 86.2% | 84% | ||
| Resolution Width | 720pixels | 720pixels | ||
| Resolution Height | 1600pixels | 1608pixels | ||
| Aspect Ratio | 20:9 | 20:9 | ||
| Pixel Density | 254ppi | 264ppi | ||
| Display Bit Rate | 8-bit | 8-bit | ||
| Display Resolution | HD+ | HD+ | ||
| Typical Brightness | 675nits | - | ||
| High Brightness | 825nits | 1000nits | ||
| Eye Protection | TUV Rheinland certification | TUV Rheinland certification | ||
| Colour Depth | 16.7 Million Colours | 16.7 Million Colours | ||
| Color Gamut Range | - | 83% | ||
| Peak Brightness | - | 1000nits | ||
| Colour Gamut | - | NTSC |
Body
🏆 Winner: Vivo Y31 5G
| Height | 170.12 mm | 166.14 mm | ||
|---|---|---|---|---|
| Width | 78.43 mm | 77.01 mm | ||
| Thickness | 8.8 mm | 8.39 mm | ||
| Weight | 232 grams | 209 grams | ||
| Screen Material | Gorilla Glass 7i | Glass | ||
| Display Protection | Gorilla Glass 7i | Guardian Glass | ||
| Back Material | Vegan Leather | Plastic | ||
| Side Material | Plastic Frame | Plastic Frame | ||
| Build Quality | Corning Gorilla Glass 7i | SGS 5-Star Drop Resistance | ||
| Ports | USB Type-C 2.0 | USB Type-C 2.0 | ||
| Additional Features | OTG | OTG, USB Type-C (bottom) | ||
| IP Rating | IP64 (Dust and Water Resistant) | IP68/69 (Dust and Water Resistant) | ||
| Speaker | Stereo Speakers | Stereo Speakers |
Processor
🏆 Winner: Poco M8x 5G
| Chipset Manufacturer | Qualcomm | Qualcomm | ||
|---|---|---|---|---|
| Chipset | Snapdragon 4 Gen 5 | Snapdragon 4 Gen 2 | ||
| Fabrication Size | 4 nm | 4 nm | ||
| Number of Cores | Octa-core | Octa-core | ||
| Clock Speed | 2x2.4 GHz Cortex-A78 & 6x2.0 GHz Cortex-A55 | 2x2.2 GHz Cortex-A78 & 6x1.95 GHz Cortex-A55 | ||
| Cooling System | Graphite Cooling | - | ||
| GPU | Adreno 613 | Adreno 613 |
Performance Benchmarks
| AnTuTu | 653645 | 427408 | ||
|---|---|---|---|---|
| Geekbench 6 CPU Single-Core | 908 | 918 | ||
| Geekbench 6 CPU Multi-Core | 2112 | 2121 |
Operating System
| OS Name | Android | Android | ||
|---|---|---|---|---|
| OS Version | 16 | 15 | ||
| OS Skin | Poco HyperOS | Vivo Funtouch | ||
| OS Updates | 4 year(s) | 2 year(s) | ||
| Security Updates | 6 year(s) | 3 year(s) | ||
| AI Features | AI Assistant, AI Bokeh, AI Camera, AI Eraser, AI HDR, AI Sky, Circle to Search, Gemini | AI Camera, AI Erase, AI Photo Enhance, AI Screen Translation, AI SuperLink, Circle to Search with Google | ||
| Gaming Mode | - | Yes |
Main Camera
🏆 Winner: Poco M8x 5G
| Main Camera Megapixel | 50MP | 50MP | ||
|---|---|---|---|---|
| Main Camera Aperture | f/1.8 | f/1.8 | ||
| Main Camera Lens Type | Wide-angle | Wide-angle | ||
| Main Camera Sensor Size | 1/2.76" | - | ||
| Main Camera Camera Features | 2x In-sensor Zoom, PDAF | PDAF | ||
| Main Camera #2 Megapixel | 0.08MP | 0.08MP | ||
| Main Camera #2 Lens Type | Auxiliary | Auxiliary | ||
| Features | Dual View, Film Camera Mode, HDR, LED flash, Night mode, Portrait Bokeh, Time Lapse | Documents Mode, Night, panorama, Portrait mode, Pro, Slow-Mo, Underwater Photography | ||
| Dynamic Video Recording Support | SDR recording | SDR recording | ||
| Slow Motion Recording | 120 fps slomo | 120 fps slomo | ||
| Auto Focus Type | PDAF | PDAF | ||
| Dedicated Imaging Chip | - | - | ||
| Max Zoom Supported | 2-10X | - | ||
| Optical Zoom Support | 2X | - | ||
| Video Features | 120fps Slo-mo, Dual Video | Slow Motion, Time-lapse Video | ||
| Video Recording | 1080p@30fps | 1080p@30fps | ||
| Main Camera #2 Aperture | - | f/3.0 |
Selfie Camera
🏆 Winner: Tie
| Front Camera #1 Megapixel | 8MP | 8MP | ||
|---|---|---|---|---|
| Front Camera #1 Aperture | f/2.0 | f/2.0 | ||
| Front Camera #1 Pixel Size | 1.12 µm | - | ||
| Front Camera #1 Lens Type | Wide | Wide | ||
| Front Camera #1 Sensor Size | 1/4.0" | - | ||
| Features | Dual Video, HDR Photos, Night mode, Portrait Mode | Face unlock, Night, Portrait Mode | ||
| Auto Focus Type | Fixed Focus | Fixed Focus | ||
| Video Features | 1080p@30fps | - | ||
| Video Recording | 1080@30fps | 1080@30fps | ||
| HDR Recording Support | SDR recording | SDR recording |
Battery
🏆 Winner: Poco M8x 5G
| Battery Capacity | 7900mAh | 6500mAh | ||
|---|---|---|---|---|
| Battery Type | Lithium Polymer | Lithium Ion | ||
| Reverse Wired Charging Support | Yes | Yes | ||
| Charging Speed Wired | 45W | 44W | ||
| Charging Speed Reverse Wired | 22.5W | - |
Battery Test Results
| Charging Time (0 To 50%) | 1hr 12 min (20 to 100%) | - |
|---|
Memory
🏆 Winner: Poco M8x 5G
| Storage Size | 128 | 128 | ||
|---|---|---|---|---|
| Storage Type | UFS 2.2 | eMMC 5.1 | ||
| RAM Size | 4 | 4 | ||
| RAM Type | LPDDR4X | LPDDR4X |
Network
| Sim Type | Dual nano-SIM (nano-SIM, dual stand-by) | Hybrid Dual SIM (2 Nano SIMs, 1 Nano SIM+1 microSD) | ||
|---|---|---|---|---|
| Network Support | 5G | 5G | ||
| Band Types | 5G, GSM, LTE FDD, LTE TD, WCDMA | 5G, GSM, LTE FDD, LTE TD, WCDMA | ||
| 2G Bands | 3, 5, 8 | 1800, 850, 900 | ||
| 3G Bands | 1, 5, 8 | WCDMA 1, 5, 8 | ||
| 4G Bands | 1, 3, 5, 8, 28, 40, 41 | LTE 1, 3, 5, 8, 28B, 38, 40, 41 | ||
| 5G Bands | 1, 3, 5, 8, 28, 40, 78 | SA/NSA 1, 3, 5, 8, 28, 40, 77, 78 |
Connectivity
🏆 Winner: Poco M8x 5G
| Wi-Fi Standards | Wi-Fi 5 802.11 a/b/g/n/ac | Wi-Fi 5 802.11 a/b/g/n/ac | ||
|---|---|---|---|---|
| Wi-Fi Features | Hotspot, Wi-Fi Direct | Hotspot | ||
| Wi-Fi Version | WiFi 5 | WiFi 5 | ||
| Bluetooth Version | 5.1 | 4.2 | ||
| Bluetooth Codecs | A2DP, LE | A2DP, AAC, LE | ||
| GPS | BDS, Galileo, Glonass, GPS | Beidou, Galileo, Glonass, GPS, QZSS | ||
| Radio | FM Radio | - |
Features
| Fingerprint Scanner | Side Mounted | Side Mounted | ||
|---|---|---|---|---|
| Sensors on Board | Accelerometer, Compass, IR Blaster, Proximity Sensor | Accelerometer, Ambient Light Sensor, E-Compass, Proximity Sensor | ||
| Haptic Feedback | Vibration Motor | Ordinary Motor |



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