Realme P4x 5G vs Samsung Galaxy S21 Ultra
Quick Comparison
Samsung Galaxy S21 Ultra has better RAM than Realme P4x 5G. In terms of display resolution, Samsung Galaxy S21 Ultra has better resolution of 3200 x 1440 than Realme P4x 5G which has resolution of 2400 x 1080. Samsung Galaxy S21 Ultra has more internal memory than Realme P4x 5G
| Name | Realme P4x 5G | Samsung Galaxy S21 Ultra |
| RAM | 6 GB | 12 GB |
|---|---|---|
| Display | 6.72 in | 6.8 in |
| Internal Memory | 128 GB | 256 GB |
| Battery | 7000 mAh | 5000 mAh |
| Camera | 50 MP + 2 MP Dual | 108 MP Quad |
| Price | Rs. 17489 | Rs. 47990 |
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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 January 14, 2021. The cost of Samsung Galaxy S21 Ultra is Rs. 47990.
Display comparison
Realme P4x 5G has screen size of 6.72 inches which falls short to Samsung Galaxy S21 Ultra's 6.8 inch screen. Realme P4x 5G has LCD Screen type where as Samsung Galaxy S21 Ultra has Screen type. Samsung's phone has display density of 515 PPI & Realme's phone has only 391 PPI display density. In terms of screen to body ratio, Realme's phone has better screen to body ratio of ~ 91.4% than Samsung's phone ~ 89.8%. Both phones have same aspect ratio of 20:9.
Memory comparison
Samsung Galaxy S21 Ultra's larger 12 GB RAM is better for playing games and all with respect to Realme P4x 5G's lower 6 GB RAM. Samsung Galaxy S21 Ultra has more Internal Memory (256 GB) than Realme P4x 5G (128 GB).
Camera comparison
Samsung Galaxy S21 Ultra's 108 MP Quad Rear Camera outshines Realme P4x 5G's 50 MP + 2 MP Dual Rear Camera in terms of resolution. Samsung Galaxy S21 Ultra will be better choice if you're looking to click lot of selfies as it has better 40 MP Front Camera in comparison to Realme P4x 5G's 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 10 version.
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Full Comparison
| Name | Realme P4x 5G | Samsung Galaxy S21 Ultra |
| General | ||
| Model | RMX5108 | Galaxy S21 Ultra 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 | January 14, 2021 |
| 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 | 75.6 x 165.1 x 8.9 mm |
| Weight | 208 g | 227 g |
| Bezel less | No | |
| Colors | Matte Sliver, Elegant Pink, Lake Green | |
| Display | ||
| Type | Color LCD Screen (1B Colors) | Color Dynamic AMOLED 2X (16M Colors) |
| Touch | Yes, 240 Hz Touch Sampling Rate | Yes |
| Size | 6.72 inches, 1080 x 2400 pixels, 144 Hz | 6.8 inches, 1440 x 3200 pixels, 120 Hz |
| Aspect Ratio | 20:9 | 20:9 |
| PPI | ~ 391 PPI | ~ 515 PPI |
| Screen to Body Ratio | ~ 91.4% | ~ 89.8% |
| Glass Type | Corning Gorilla Glass Victus | |
| Brightness | 1000nits Sunlight Display | |
| Features | Always-on Display, HDR10+, Curved Display | |
| Notch | Yes, Punch Hole | Yes, Punch Hole |
| Curved Display | Yes | |
| Memory | ||
| RAM | 6 GB | 12 GB |
| RAM Type | LPDDR4X | |
| Expandable RAM | Upto 10 GB Extra Virtual RAM | |
| Storage | 128 GB | 256 GB |
| Storage Type | UFS 3.1 | UFS 3.1 |
| 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 |
| Wifi Version | Wi-Fi 6 (802.11ax) Supported | |
| Bluetooth | Yes, v5.4 | Yes, v5.2, A2DP, LE |
| USB | Yes, USB-C v2.0 | Yes, USB-C v3.2 |
| USB Features | USB Tethering, USB on-the-go, USB Charging, USB Storage | USB on-the-go, USB Charging |
| IR Blaster | No | |
| 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, BDS, GALILEO |
| Fingerprint Sensor | Yes, Side | Yes, In Display |
| Face Unlock | Yes | Yes |
| Sensors | Geomagnetic Sensor, Proximity Sensor, Light Sensor, Acceleration Sensor, Gyroscope | Accelerometer, Gyro, Proximity, Compass, Barometer |
| 3.5mm Headphone Jack | No | |
| NFC | Yes | |
| AI Features | AI Image Editing, NEXT AI, AI Text Scanner, Circle to Search, AI Smart Loop, AI Recording Summary | |
| Water Resistance | Yes, 1.5 m upto 30 min | |
| Splash Resistant | Yes | |
| IP Rating | IP64 | IP68 |
| Dust Resistant | Yes | Yes |
| Extra Features | Bypass Charging, 5300mm² VC FrostCore Cooling System | |
| Camera | ||
| Rear Camera | 50 MP (Wide Angle) 2 MP | 108 MP ƒ/1.8 10 MP ƒ/4.9 (Telephoto) 10 MP ƒ/2.4 (Telephoto) 12 MP ƒ/2.2 (Ultra Wide) |
| OIS | Yes | |
| 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 | Auto-HDR, Panorama |
| Video Recording | 1080p @ 30 fps FHD, 4K @ 30 fps UHD | 8K @ 24 fps UHD, 4K @ 30/60 fps UHD, 1080p @ 240/30/60 fps FHD, 720p @ 960 fps HD |
| Flash | Yes, LED | Yes, LED |
| Front Camera | 8 MP ƒ/2 (Wide Angle) Punch Hole, Screen Flash | 40 MP ƒ/2.2 (Wide Angle) Punch Hole, Autofocus |
| Front Video Recording | 1080p @ 30 fps FHD | 4K @ 30/60 fps UHD, 1080p @ 30 fps FHD |
| Technical | ||
| OS | Android v15 | Android v10 |
| Custom UI | Realme UI 6 | |
| Chipset | Mediatek Dimensity 7400 Ultra | Samsung Exynos 2100 |
| CPU | 2.6 GHz, Octa Core Processor | 2.9 GHz, Octa Core Processor |
| Core Details | 4x2.6 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55 | 1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55 |
| GPU | Mali-G615 MC2 | Mali-G78 MP14 |
| 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 | 5000 mAh, Li-Po Battery |
| Fast Charging | Yes, 45W Ultra Charge | Yes, 25W Fast Charging |
| Wireless Charging | Yes, 15W | |
| Reverse Charging | Yes, 5W | Yes, 4.5W |