Both Vivo Y31 Pro 5G and Xiaomi Redmi 15 5G (8GB RAM + 256GB) comes with same RAM. In terms of display resolution, Vivo Y31 Pro 5G has better resolution of 2408 x 1080 than Xiaomi Redmi 15 5G (8GB RAM + 256GB) which has resolution of 2340 x 1080. Xiaomi Redmi 15 5G (8GB RAM + 256GB) has more internal memory than Vivo Y31 Pro 5G
| Name | Vivo Y31 Pro 5G | Xiaomi Redmi 15 5G (8GB RAM + 256GB) | 
| RAM | 8 GB | 8 GB | 
|---|---|---|
| Display | 6.72 in | 6.9 in | 
| Internal Memory | 128 GB | 256 GB | 
| Battery | 6500 mAh | 7000 mAh | 
| Camera | 50 MP + 2 MP Dual | 50 MP Dual | 
| Price | Rs. 18999 | Rs. 16998 | 
The cost of Vivo Y31 Pro 5G is Rs. 18999. The launch Date of the second phone is August 01, 2025. The cost of Xiaomi Redmi 15 5G (8GB RAM + 256GB) is Rs. 16998.
Vivo Y31 Pro 5G has screen size of 6.72 inches which falls short to Xiaomi Redmi 15 5G (8GB RAM + 256GB)'s 6.9 inch screen. Vivo Y31 Pro 5G has LCD Screen type where as Xiaomi Redmi 15 5G (8GB RAM + 256GB) has IPS Screen type. Vivo's phone has display density of 393 PPI & Xiaomi's phone has only 374 PPI display density. In terms of screen to body ratio, Vivo's phone has better screen to body ratio of ~ 90.7% than Xiaomi's phone ~ 83.2%. Vivo Y31 Pro 5G has 20:9 aspect ratio where as Xiaomi Redmi 15 5G (8GB RAM + 256GB) has 20.6:9 aspect ratio.
Both phones come with 8 GB RAM Xiaomi Redmi 15 5G (8GB RAM + 256GB) has more Internal Memory (256 GB) than Vivo Y31 Pro 5G (128 GB).
They both have the same 50 MP + 2 MP Dual Rear Camera. Both of them stand equal in terms of Front Camera Resolution as both have 8 MP Front Camera.
Both the phones run on Android Operating System Version 15.
| Name | Vivo Y31 Pro 5G | Xiaomi Redmi 15 5G (8GB RAM + 256GB) | 
| General | ||
| Country of Origin | India | |
| Model | Y31 Pro 5G | 15C 5G | 
| Sim Type | Dual Sim, GSM+GSM (Hybrid Slot) | Dual Sim, GSM+GSM (Hybrid Slot) | 
| Dual Sim | Yes | Yes | 
| Sim Size | Nano+Nano SIM | Nano+Nano SIM | 
| SAR | 0.99 W/kg (Head) 0.94 W/kg (Body) | |
| Device Type | Smartphone | Smartphone | 
| OS Updates | 2 years | |
| Security Updates | 4 years | |
| Release Date | August 01, 2025 | |
| In The Box | Y31 Pro 5G, Quick Start Guide, USB Cable, Charger, Eject Tool, Phone Case, Protective Film (applied), Warranty Card | Mobile Phone * 1, Adapter * 1, USB Type-C cable * 1, SIM Eject Tool * 1, Quick Start Guide, & Warranty Card * 1, Safety Information * 1 | 
| Design | ||
| Dimensions | 76.3 x 165.7 x 8.19 mm | 80.45 x 168.48 x 8.4 mm | 
| Weight | 208 g | 217 g | 
| Bezel less | No | |
| Colors | Dreamy White / Mocha Brown | Sandy Purple, Frosted White, Midnight Black | 
| Display | ||
| Type | Color LCD Screen (16M Colors) | Color IPS Screen (16M Colors) | 
| Touch | Yes | Yes, 288 Hz Touch Sampling Rate | 
| Size | 6.72 inches, 1080 x 2408 pixels, 120 Hz | 6.9 inches, 1080 x 2340 pixels, 144 Hz | 
| Aspect Ratio | 20:9 | 20.6:9 | 
| PPI | ~ 393 PPI | ~ 374 PPI | 
| Screen to Body Ratio | ~ 90.7% | ~ 83.2% | 
| Brightness | 1050 nits | 850nits Peak Brightness | 
| Features | 83% NTSC | TÜV Rheinland Circadian Friendly, TÜV Rheinland flicker free, TÜV Rheinland Low Blue light | 
| Notch | Yes, Punch Hole | Yes, Punch Hole | 
| Memory | ||
| RAM | 8 GB | 8 GB | 
| RAM Type | LPDDR4X | LPDDR4X | 
| Expandable RAM | Upto 8 GB Extra Virtual RAM | |
| Storage | 128 GB | 256 GB | 
| Storage Type | UFS 3.1 | UFS 2.2 | 
| Card Slot | Yes, (Hybrid Slot), upto 1 TB | |
| Connectivity | ||
| GPRS | Yes | Yes | 
| EDGE | Yes | Yes | 
| 3G | Yes | Yes | 
| 4G | Yes | Yes | 
| 5G | Yes | Yes | 
| 5G Bands | n1/n3/n5/n8/n28B/n40/n77/n78 | SA: n1/n3/n5/n8/n28/n40/n78, NSA: n1/n3/n40/n78/n8 | 
| VoLTE | Yes, Dual Stand-By | Yes | 
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot | 
| Wifi Version | 2.4 GHz / 5 GHz | |
| Bluetooth | Yes, v5.4 | Yes, v5.1, A2DP, LE | 
| USB | Yes, USB-C v2.0 | Yes, USB-C | 
| USB Features | USB Tethering, USB on-the-go, USB Charging | USB on-the-go, USB Charging | 
| IR Blaster | Yes | Yes | 
| Extra | ||
| GPS | GPS, BeiDou, GLONASS, Galileo, QZSS | Yes, with A-GPS, Glonass, Beidou | 
| Fingerprint Sensor | Yes, Side | Yes, Side | 
| Face Unlock | Yes | Yes | 
| Sensors | Accelerometer, Color Temperature Sensor, Ambient Light Sensor, Proximity Sensor, E-compass, Gyroscope, Infrared blaster | Ambient Light Sensor, Proximity Sensor (Virtual), E Compass, Accelerometer | 
| AI Features | AI Erase, AI Photo Enhance, Smart AI Assistant, AI SuperLinK | Circle to Search, Gemini AI, AI Erase | 
| Splash Resistant | Yes | Yes | 
| IP Rating | IP64 | IP64 | 
| Dust Resistant | Yes | Yes | 
| Extra Features | Dual SIM Dual Standby (DSDS) | Hydro Touch | 
| Camera | ||
| Rear Camera | 50 MP ƒ/1.8 (Main) 2 MP ƒ/2.4 Bokeh | 50 MP ƒ/1.75 (Wide Angle) | 
| Auto Focus | Yes | Yes | 
| Features | Photo, Night, Portrait, Video, Live Photo, Slo-mo, Time-lapse, Pro, Pano, Documents, 50 MP, Scan | AI Sky, AI Erase, Classic Film Filters | 
| Video Recording | 1080p, 4K @ 30 fps UHD | 1080p @ 30 fps FHD | 
| Flash | Yes, LED | Yes, LED | 
| Front Camera | 8 MP ƒ/2 Punch Hole | 8 MP ƒ/2.2 (Wide Angle) Punch Hole, Screen Flash | 
| Front Video Recording | 1080p | 1080p @ 30 fps FHD | 
| Technical | ||
| OS | Android v15 | Android v15 | 
| Custom UI | HyperOS 2 | |
| Chipset | MediaTek Dimensity 7300 | Qualcomm Snapdragon 6s Gen3 | 
| CPU | Octa Core Processor | 2.3 GHz, Octa Core Processor | 
| Core Details | 2x2.3 GHz Cortex-A78 & 6x2.0 GHz Cortex-A55 | |
| GPU | Adreno 619 | |
| Java | No | No | 
| Browser | Yes | Yes, supports HTML5 | 
| Multimedia | ||
| Yes | Yes | |
| Music | WAV, MP3, MP2, AMR-NB, MIDI, Vorbis, APE, FLAC, OGG, M4A | Yes | 
| Video | MP4, 3GP, AVI, TS, MKV, FLV | Yes | 
| FM Radio | No | Yes | 
| Speaker Type | Dual Stereo | Bottom Firing Loud Speaker | 
| Audio Features | Hi-Res Audio Certification | Dolby Certified, 200% Super Volume | 
| Document Reader | Yes | |
| Battery | ||
| Type | Non-Removable Battery | Non-Removable Battery | 
| Size | 6500 mAh, Li-ion Battery | 7000 mAh, Si-C EV-Grade Technology | 
| Fast Charging | Yes, 44W | Yes, 33W | 
| Reverse Charging | Yes, 18W | |