Vivo Y31 5G (6GB RAM + 128GB) vs Xiaomi Redmi 9 Prime (4GB RAM + 128GB)
Quick Comparison
Vivo Y31 5G (6GB RAM + 128GB) has better RAM than Xiaomi Redmi 9 Prime (4GB RAM + 128GB). In terms of display resolution, Xiaomi Redmi 9 Prime (4GB RAM + 128GB) has better resolution of 2340 x 1080 than Vivo Y31 5G (6GB RAM + 128GB) which has resolution of 1620 x 720. Both have the same amount of internal memory.
| Name | Vivo Y31 5G (6GB RAM + 128GB) | Xiaomi Redmi 9 Prime (4GB RAM + 128GB) |
| RAM | 6 GB | 4 GB |
|---|---|---|
| Display | 6.68 in | 6.53 in |
| Internal Memory | 128 GB | 128 GB |
| Battery | 6500 mAh | 5020 mAh |
| Camera | 50 MP + 0.08 MP Dual | 13 MP Quad |
| Price | Rs. 16499 | Rs. 10999 |
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Detailed Comparison
Price And Launch
The launch Date of the first phone is September 14, 2025. The cost of Vivo Y31 5G (6GB RAM + 128GB) is Rs. 16499. The launch Date of the second phone is August 4, 2020 . The cost of Xiaomi Redmi 9 Prime (4GB RAM + 128GB) is Rs. 10999.
Display comparison
Xiaomi Redmi 9 Prime (4GB RAM + 128GB) has screen size of 6.53 inches which falls short to Vivo Y31 5G (6GB RAM + 128GB)'s 6.68 inch screen. Vivo Y31 5G (6GB RAM + 128GB) has IPS Screen type where as Xiaomi Redmi 9 Prime (4GB RAM + 128GB) has IPS LCD Screen type. Xiaomi's phone has display density of 395 PPI & Vivo's phone has only 266 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 5G (6GB RAM + 128GB) has 20:9 aspect ratio where as Xiaomi Redmi 9 Prime (4GB RAM + 128GB) has 19.5:9 aspect ratio.
Memory comparison
Vivo Y31 5G (6GB RAM + 128GB)'s larger 6 GB RAM is better for playing games and all with respect to Xiaomi Redmi 9 Prime (4GB RAM + 128GB)'s lower 4 GB RAM. and both have same Internal Memory of 128 GB.
Camera comparison
Vivo Y31 5G (6GB RAM + 128GB)'s 50 MP + 0.08 MP Dual Rear Camera outshines Xiaomi Redmi 9 Prime (4GB RAM + 128GB)'s 13 MP Quad Rear Camera in terms of resolution. Both of them stand equal in terms of Front Camera Resolution as both have 8 MP Front Camera.
Technical comparison
Both the phones has Android Operating System but the first one runs on version 15 and the second one on v10 (Q) version.
Related Comparisons
Full Comparison
| Name | Vivo Y31 5G (6GB RAM + 128GB) | Xiaomi Redmi 9 Prime (4GB RAM + 128GB) |
| General | ||
| Country of Origin | India | |
| Model | Y31 | Redmi 9 Prime |
| 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 | September 14, 2025 | August 4, 2020 |
| In The Box | USB Cable, SIM Tray Ejector, Phone Case, Screen Protector (Applied), Power Adapter | |
| Design | ||
| Dimensions | 77 x 163.3 x 9.1 mm | |
| Weight | 198 g | |
| Display | ||
| Type | Color IPS Screen (16M Colors) | Color IPS LCD Screen (16M Colors) |
| Touch | Yes | Yes |
| Size | 6.68 inches, 720 x 1620 pixels, 120 Hz | 6.53 inches, 1080 x 2340 pixels |
| Aspect Ratio | 20:9 | 19.5:9 |
| PPI | ~ 266 PPI | ~ 395 PPI |
| Screen to Body Ratio | ~ 90.7% | ~ 83.2% |
| Glass Type | Corning Gorilla Glass 3 | |
| Brightness | 1000nts | |
| Notch | Yes, Water Drop Notch | Yes, Water Drop Notch |
| Memory | ||
| RAM | 6 GB | 4 GB |
| Expandable RAM | Upto 6 GB Extra Virtual RAM | |
| Storage | 128 GB | 128 GB |
| Card Slot | Yes, upto 512 GB | |
| Connectivity | ||
| GPRS | Yes | Yes |
| EDGE | Yes | Yes |
| 3G | Yes | Yes |
| 4G | Yes | Yes |
| 5G | Yes | |
| VoLTE | Yes, Dual Stand-By | Yes, Dual Stand-By |
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot |
| Bluetooth | Yes, v5.4 | Yes, v5.0, 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 | |
| Extra | ||
| GPS | with A-GPS, BeiDou, GLONASS, Galileo | yes with A-GPS, Glonass, Beidou |
| Fingerprint Sensor | Yes, Side | Yes, Rear |
| Face Unlock | Yes | Yes |
| Sensors | Accelerometer, Ambient Light Sensor, Proximity Sensor, E-compass, Virtual Gyroscope | Light sensor, Proximity sensor, Accelerometer, Compass |
| 3.5mm Headphone Jack | Yes | |
| AI Features | SMart AI, Ai Erase, Ai Photo Enhance, Circle to Search | |
| Splash Resistant | Yes, P2i Technology | |
| Camera | ||
| Rear Camera | 50 MP (Main) 0.08 MP | 13 MP ƒ/1.8 (Main) 8 MP ƒ/2.2 (Ultra Wide) 5 MP ƒ/2.4 (Macro) Macro 2 MP ƒ/2.4 (Depth Sensor) |
| Auto Focus | Yes | Yes, Phase Detection autofocus |
| Features | Digital Zoom, Face detection, Touch to focus | |
| Video Recording | 1080p @ 30 fps FHD | 1080p @ 30 fps FHD |
| Flash | Yes, LED | Yes, LED |
| Front Camera | 8 MP ƒ/2 | 8 MP ƒ/2 |
| Front Video Recording | 1080p @ 30 fps FHD | |
| Technical | ||
| OS | Android v15 | Android v10 |
| Chipset | MediaTek Dimensity 6300 | MediaTek Helio G80 |
| CPU | Octa Core Processor | 2 GHz, Octa Core Processor |
| Core Details | 2 GHz, Dual core, Cortex A75 + 1.8 GHz, Quad core, Cortex A55 | |
| GPU | Mali-G52 | |
| Java | No | No |
| Browser | Yes | Yes |
| 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 | Yes | Yes |
| Speaker Type | Dual Stereo | |
| Document Reader | Yes | |
| Battery | ||
| Type | Non-Removable Battery | Non-Removable Battery |
| Size | 6500 mAh | 5020 mAh, Li-Po Battery |
| Fast Charging | Yes, 44W | Yes, 18W Fast Charging |
| Talk Time | 31 hours | |
| Music Playback Time | 185 hours | |