Realme P4x 5G vs Vivo Y21 5G (6GB RAM + 128GB)
Quick Comparison
Both Realme P4x 5G and Vivo Y21 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 Y21 5G (6GB RAM + 128GB) which has resolution of 1600 x 720. Both have the same amount of internal memory.
| Name | Realme P4x 5G | Vivo Y21 5G (6GB RAM + 128GB) |
| RAM | 6 GB | 6 GB |
|---|---|---|
| Display | 6.72 in | 6.74 in |
| Internal Memory | 128 GB | 128 GB |
| Battery | 7000 mAh | 6500 mAh |
| Camera | 50 MP + 2 MP Dual | 50 MP + 0.08 MP Dual |
| Price | Rs. 17489 | Rs. 20999 |
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Detailed Comparison
Price And Launch
The launch Date of the first phone is December 04, 2025. The cost of Realme P4x 5G is Rs. 17489. The launch Date of the second phone is March 26, 2026. The cost of Vivo Y21 5G (6GB RAM + 128GB) is Rs. 20999.
Display comparison
Realme P4x 5G has screen size of 6.72 inches which falls short to Vivo Y21 5G (6GB RAM + 128GB)'s 6.74 inch screen. Realme P4x 5G has LCD Screen type where as Vivo Y21 5G (6GB RAM + 128GB) has IPS Screen type. Realme's phone has display density of 391 PPI & Vivo's phone has only 260 PPI display density. In terms of screen to body ratio, Realme's phone has better screen to body ratio of ~ 91.4% than Vivo's phone ~ 85%. Both mobiles have same aspect ratio of 20:9.
Memory comparison
Both mobiles come with 6 GB RAM and both have same Internal Memory of 128 GB.
Camera comparison
They both have the same 50 MP + 2 MP Dual Rear Camera. Realme P4x 5G will be better choice if you're looking to click lot of selfies as it has better 8 MP Front Camera in comparison to Vivo Y21 5G (6GB RAM + 128GB)'s 5 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 16 version.
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Full Comparison
| Name | Realme P4x 5G | Vivo Y21 5G (6GB RAM + 128GB) |
| General | ||
| Country of Origin | India | |
| Model | RMX5108 | Y21 5G |
| Sim Type | Dual Sim, GSM+GSM | Dual Sim, GSM+GSM |
| Dual Sim | Yes | Yes |
| Sim Size | Nano+Nano SIM | Nano+Nano SIM |
| Device Type | Smartphone | Smartphone |
| OS Updates | 2 years | |
| Security Updates | 3 years | |
| Release Date | December 04, 2025 | March 26, 2026 |
| In The Box | 1 x Handset, 1 x Charger, 1 x USB data cable, 1 x SIM Ejector Tool, 1 x Protective Case, 1 x Quick Guide | |
| Design | ||
| Dimensions | 75.95 x 165.85 x 8.39 mm | 77.1 x 167.4 x 8.4 mm |
| Weight | 208 g | 209 g |
| Bezel less | No | |
| Colors | Matte Sliver, Elegant Pink, Lake Green | Champagne Gold, Midnight Blue |
| Display | ||
| Type | Color LCD Screen (1B Colors) | Color IPS Screen |
| Touch | Yes, 240 Hz Touch Sampling Rate | Yes |
| Size | 6.72 inches, 1080 x 2400 pixels, 144 Hz | 6.74 inches, 720 x 1600 pixels, 120 Hz |
| Aspect Ratio | 20:9 | 20:9 |
| PPI | ~ 391 PPI | ~ 260 PPI |
| Screen to Body Ratio | ~ 91.4% | ~ 85% |
| Brightness | 1000nits Sunlight Display | 1200 nits Peak Brightness |
| Notch | Yes, Punch Hole | Yes, Water Drop Notch |
| Memory | ||
| RAM | 6 GB | 6 GB |
| RAM Type | LPDDR4X | |
| Expandable RAM | Upto 10 GB Extra Virtual RAM | Upto 6 GB Extra Virtual RAM |
| Storage | 128 GB | 128 GB |
| Storage Type | UFS 3.1 | eMMC 5.1 |
| Card Slot | Yes | |
| Connectivity | ||
| GPRS | Yes | Yes |
| EDGE | Yes | Yes |
| 3G | Yes | Yes |
| 4G | Yes | Yes |
| 5G | Yes | Yes |
| 5G Bands | n1/n3/n5/n8/n28B/n38/n40/n77/n78 | |
| VoLTE | Yes, Dual Stand-By | Yes |
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot |
| Wifi Version | Wi-Fi 6 (802.11ax) Supported | 2.4 GHz / 5 GHz |
| Bluetooth | Yes, v5.4 | Yes |
| 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, USB Storage |
| IR Blaster | No | Yes |
| Performance | ||
| AnTuTu Score | 1,001,028 (Total) (v11) 353,428 (CPU) 149,704 (GPU) 210,954 (Memory) 286,942 (UX) | |
| Geekbench Score | 2,971 (Multi Core) (v6) 1,045 (Single Core) 3,047 (OpenCL) 2,930 (Vulkan) | |
| Extra | ||
| GPS | GNSS: SIngle band: BeiDou, GPS, GLONASS,Galileo,QZSS | Yes, with A-GPS, GLONASS, GALILEO, BDS, QZSS |
| Fingerprint Sensor | Yes, Side | Yes, Side |
| Face Unlock | Yes | Yes |
| Sensors | Geomagnetic Sensor, Proximity Sensor, Light Sensor, Acceleration Sensor, Gyroscope | Accelerometer, Proximity, Compass |
| 3.5mm Headphone Jack | Yes | |
| NFC | Yes | |
| AI Features | AI Image Editing, NEXT AI, AI Text Scanner, Circle to Search, AI Smart Loop, AI Recording Summary | AI Creation, AI Photo Enhance, AI Documents, AI Screen Translation, Circle to Search |
| Water Resistance | Yes | |
| Splash Resistant | Yes | |
| IP Rating | IP64 | IP65 |
| Dust Resistant | Yes | Yes |
| Extra Features | Bypass Charging, 5300mm² VC FrostCore Cooling System | |
| Camera | ||
| Rear Camera | 50 MP (Wide Angle) 2 MP | 50 MP ƒ/1.8 (Wide Angle) 0.08 MP |
| Auto Focus | Yes | Yes |
| Features | Photo, Video, Portrait, Night, Panorama, Cinematic, SLO-MO, Long Exposure, Dual-view video, TIME-LAPSE, HI-RES, Google Lens, PRO, Hypertext, Scan, DOC SCANNER, TILT-SHIFT | |
| Video Recording | 1080p @ 30 fps FHD, 4K @ 30 fps UHD | 1080p @ 30 fps FHD |
| Flash | Yes, LED | Yes, LED |
| Front Camera | 8 MP ƒ/2 (Wide Angle) Punch Hole, Screen Flash | 5 MP ƒ/2.2 (Wide Angle) |
| Front Video Recording | 1080p @ 30 fps FHD | |
| Technical | ||
| OS | Android v15 | Android v16 |
| Custom UI | Realme UI 6 | OriginOS 6 |
| Chipset | Mediatek Dimensity 7400 Ultra | Mediatek Dimensity 6300 |
| CPU | 2.6 GHz, Octa Core Processor | 2.4 GHz, Octa Core Processor |
| Core Details | 4x2.6 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55 | 2X Arm Cortex-A76@2.4GHz & 6X Arm Cortex-A55@2.0GHz |
| GPU | Mali-G615 MC2 | Mali-G57 MC2 |
| Java | No | No |
| Browser | Yes | Yes |
| Multimedia | ||
| Yes | Yes | |
| Music | MP3, AAC, APE, AMR, WAV, OGG, FLAC, WMA | Yes |
| Video | AVI, 3GP, MP4, WMV, MKV, MOV, ASF, FLV | Yes |
| FM Radio | No | No |
| Speaker Type | Dual Stereo | |
| Audio Features | 400% Volume | |
| Document Reader | Yes | Yes |
| Battery | ||
| Type | Non-Removable Battery | Non-Removable Battery |
| Size | 7000 mAh | 6500 mAh, Li-ion Battery |
| Fast Charging | Yes, 45W Ultra Charge | Yes, 44W Fast Charging |
| Reverse Charging | Yes, 5W | Yes |