Both Realme P4x 5G and Vivo Y31 5G (6GB RAM + 128GB) comes with same RAM. In terms of display resolution, Realme P4x 5G has better resolution of 2400 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 | Realme P4x 5G | Vivo Y31 5G (6GB RAM + 128GB) |
| RAM | 6 GB | 6 GB |
|---|---|---|
| Display | 6.78 in | 6.68 in |
| Internal Memory | 128 GB | 128 GB |
| Battery | 7000 mAh | 6500 mAh |
| Camera | 50 MP + 8 MP Dual | 50 MP + 0.08 MP Dual |
| Price | Rs. 13999 | Rs. 15955 |
The launch Date of the first phone is expected to be December 18, 2025 (Expected). The Expected cost of Realme P4x 5G is Rs. 13999. The launch Date of the second phone is September 14, 2025. The cost of Vivo Y31 5G (6GB RAM + 128GB) is Rs. 15955.
Vivo Y31 5G (6GB RAM + 128GB) has screen size of 6.68 inches which falls short to Realme P4x 5G's 6.78 inch screen. Realme P4x 5G has LCD Screen type where as Vivo Y31 5G (6GB RAM + 128GB) has IPS Screen type. Realme's phone has display density of 392 PPI & Vivo's phone has only 266 PPI display density. In terms of screen to body ratio, Realme's phone has better screen to body ratio of ~ 92.65% than Vivo's phone ~ 90.7%. Both mobiles have same aspect ratio of 20:9.
Both phones come with 6 GB RAM and both have same Internal Memory of 128 GB.
They both have the same 50 MP + 8 MP Dual Rear Camera. Realme P4x 5G will be better choice if you're looking to click lot of selfies as it has better 16 MP Front Camera in comparison to Vivo Y31 5G (6GB RAM + 128GB)'s 8 MP Front Camera.
Both the phones has Android Operating System but the first one runs on version 16 and the second one on 15 version.
| Name | Realme P4x 5G | Vivo Y31 5G (6GB RAM + 128GB) |
| General | ||
| Country of Origin | India | |
| Model | Y31 | |
| 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 |
| Device Type | Smartphone | Smartphone |
| Release Date | December 18, 2025 (Expected) | September 14, 2025 |
| In The Box | USB Cable, SIM Tray Ejector, Phone Case, Screen Protector (Applied), Power Adapter | |
| Design | ||
| Bezel less | No | |
| Display | ||
| Type | Color LCD Screen (1B Colors) | Color IPS Screen (16M Colors) |
| Touch | Yes, 240 Hz Touch Sampling Rate | Yes |
| Size | 6.78 inches, 1080 x 2400 pixels, 120 Hz | 6.68 inches, 720 x 1620 pixels, 120 Hz |
| Aspect Ratio | 20:9 | 20:9 |
| PPI | ~ 392 PPI | ~ 266 PPI |
| Screen to Body Ratio | ~ 92.65% | ~ 90.7% |
| Brightness | 1000nts | |
| Notch | Yes, Punch Hole | Yes, Water Drop Notch |
| Memory | ||
| RAM | 6 GB | 6 GB |
| Expandable RAM | Upto 6 GB Extra Virtual RAM | |
| Storage | 128 GB | 128 GB |
| Card Slot | Yes, (Hybrid Slot) | |
| Connectivity | ||
| GPRS | Yes | Yes |
| EDGE | Yes | Yes |
| 3G | Yes | Yes |
| 4G | Yes | Yes |
| 5G | Yes | Yes |
| VoLTE | Yes, Dual Stand-By | Yes, Dual Stand-By |
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot |
| Bluetooth | Yes, v5.3 | Yes, v5.4 |
| USB | Yes, USB-C v2.0 | Yes, USB-C v2.0 |
| USB Features | USB Tethering, USB on-the-go, USB Charging, USB Storage | USB Tethering, USB on-the-go, USB Charging |
| IR Blaster | No | |
| Extra | ||
| GPS | Yes | with A-GPS, BeiDou, GLONASS, Galileo |
| Fingerprint Sensor | Yes, Side | Yes, Side |
| Face Unlock | Yes | Yes |
| Sensors | Geomagnetic Sensor, Proximity Sensor, Light Sensor, Acceleration Sensor, Gyroscope | Accelerometer, Ambient Light Sensor, Proximity Sensor, E-compass, Virtual Gyroscope |
| AI Features | SMart AI, Ai Erase, Ai Photo Enhance, Circle to Search | |
| Water Resistance | Yes | |
| IP Rating | IP69 | |
| Dust Resistant | Yes | |
| Camera | ||
| Rear Camera | 50 MP ƒ/1.8 (Wide Angle) 8 MP ƒ/2.4 (Ultra Wide) | 50 MP (Main) 0.08 MP |
| Auto Focus | Yes | Yes |
| Video Recording | 1080p @ 30 fps FHD, 4K @ 30 fps UHD | 1080p @ 30 fps FHD |
| Flash | Yes, LED | Yes, LED |
| Front Camera | 16 MP ƒ/2 (Wide Angle) Punch Hole, Screen Flash | 8 MP ƒ/2 |
| Front Video Recording | 1080p @ 30 fps FHD | |
| Technical | ||
| OS | Android v16 | Android v15 |
| Custom UI | Realme UI 6 | |
| Chipset | Mediatek Dimensity 7400 | MediaTek Dimensity 6300 |
| CPU | Octa Core Processor | Octa Core Processor |
| Java | No | No |
| Browser | Yes | Yes |
| Multimedia | ||
| Yes | Yes | |
| Music | MP3, AAC, APE, AMR, WAV, OGG, FLAC, WMA | WAV, MP3, MP2, AMR-NB, MIDI, Vorbis, APE, FLAC, OGG, M4A |
| Video | AVI, 3GP, MP4, WMV, MKV, MOV, ASF, FLV | MP4, 3GP, AVI, TS, MKV, FLV |
| FM Radio | No | Yes |
| Speaker Type | Dual Stereo | |
| Document Reader | Yes | |
| Battery | ||
| Type | Non-Removable Battery | Non-Removable Battery |
| Size | 7000 mAh | 6500 mAh |
| Fast Charging | Yes | Yes, 44W |
| Reverse Charging | Yes, 5W | |
| Video Playback Time | 49 hours | |