Realme P4x 5G (8GB RAM + 128GB) vs Xiaomi Redmi Note 8 2021
Here you can compare Realme P4x 5G (8GB RAM + 128GB) and Xiaomi Redmi Note 8 2021. Comparing Realme P4x 5G (8GB RAM + 128GB) vs Xiaomi Redmi Note 8 2021 on Smartprix enables you to check their respective specs scores and unique features. It would potentially help you understand how Realme P4x 5G (8GB RAM + 128GB) stands against Xiaomi Redmi Note 8 2021 and which one should you buy The current lowest price found for Realme P4x 5G (8GB RAM + 128GB) is ₹18,949 and for Xiaomi Redmi Note 8 2021 is ₹9,990. The details of both of these products were last updated on Jul 07, 2026.
| Specification | Realme P4x 5G (8GB RAM + 128GB) | Xiaomi Redmi Note 8 2021 |
|---|---|---|
| Rear Camera | 50 MP (Wide Angle) 2 MP | 48 MP ƒ/1.8 (Wide Angle) 8 MP ƒ/2.2 (Ultra Wide) 2 MP ƒ/2.4 (Macro) Macro 2 MP ƒ/2.4 (Depth Sensor) |
| CPU | 2.6 GHz, Octa Core Processor | 2 GHz, Octa Core Processor |
| OS | Android v15 | Android v11 |
| Internal Memory | 128 GB | 64 GB |
| RAM | 8 GB | 4 GB |
| Price | ₹18,949 | ₹9,990 |
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Overview
| Specs Score | 62 / 100 Better Specs | 46 / 100 |
| Display Size | 6.72 in Bigger Display | 6.3 in |
| Display Resolution | 1080 x 2400 pixels Better Resolution | 1080 x 2340 pixels |
| Screen To Body Ratio | ~ 91.4% Less Bezels | ~ 81.7% |
| RAM | 8 GB More RAM | 4 GB |
| Storage | 128 GB More Storage | 64 GB |
| CPU Clock Speed | 2.6 GHz Faster Clock Speed | 2 GHz |
| Front Camera | 8 MP | 13 MP Better Front Camera Resolution |
| Weight | 208 g | 190 g Lighter |
| Battery | 7000 mAh Bigger Battery | 4000 mAh |
| Unique Features | 5G No No No Reverse Charging No | No 3.5mm Audio Jack FM Radio Memory Card Support No IR Blaster |
General
| Model | RMX5108 | Redmi Note 8 2021 |
| 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 | May 25, 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 | 75.3 x 158.3 x 8.4 mm |
| Weight | 208 g | 190 g |
| Bezel less | No | |
| Colors | Matte Sliver, Elegant Pink, Lake Green |
Display
| Type | Color LCD Screen (1B Colors) | Color IPS LCD Screen (16M Colors) |
| Touch | Yes, 240 Hz Touch Sampling Rate | Yes |
| Size | 6.72 inches, 1080 x 2400 pixels, 144 Hz | 6.3 inches, 1080 x 2340 pixels |
| Aspect Ratio | 20:9 | 19.5:9 |
| PPI | ~ 391 PPI | ~ 409 PPI |
| Screen to Body Ratio | ~ 91.4% | ~ 81.7% |
| Glass Type | Corning Gorilla Glass 5 | |
| Brightness | 1000nits Sunlight Display | |
| Notch | Yes, Punch Hole | Yes, Water Drop Notch |
Memory
| RAM | 8 GB | 4 GB |
| RAM Type | LPDDR4X | |
| Expandable RAM | Upto 10 GB Extra Virtual RAM | |
| Storage | 128 GB | 64 GB |
| Storage Type | UFS 3.1 | |
| Card Slot | Yes |
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 |
| 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 v2.0 |
| USB Features | USB Tethering, USB on-the-go, USB Charging, USB Storage | USB on-the-go, USB Charging |
| 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 |
| Fingerprint Sensor | Yes, Side | Yes, Rear |
| Face Unlock | Yes | Yes |
| Sensors | Geomagnetic Sensor, Proximity Sensor, Light Sensor, Acceleration Sensor, Gyroscope | Accelerometer, Gyro, Proximity, Compass |
| 3.5mm Headphone Jack | Yes | |
| AI Features | AI Image Editing, NEXT AI, AI Text Scanner, Circle to Search, AI Smart Loop, AI Recording Summary | |
| Splash Resistant | Yes | |
| IP Rating | IP64 | |
| Dust Resistant | Yes | |
| Extra Features | Bypass Charging, 5300mm² VC FrostCore Cooling System |
Camera
| Rear Camera | 50 MP (Wide Angle) 2 MP | 48 MP ƒ/1.8 (Wide Angle) 8 MP ƒ/2.2 (Ultra Wide) 2 MP ƒ/2.4 (Macro) Macro 2 MP ƒ/2.4 (Depth Sensor) |
| 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 | HDR, Panorama |
| 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 | 13 MP ƒ/2 (Wide Angle) Screen Flash |
| Front Video Recording | 1080p @ 30 fps FHD | 1080p @ 30 fps FHD |
Technical
| OS | Android v15 | Android v11 |
| Custom UI | Realme UI 6 | |
| Chipset | Mediatek Dimensity 7400 Ultra | MediaTek Helio G85 |
| CPU | 2.6 GHz, Octa Core Processor | 2 GHz, Octa Core Processor |
| Core Details | 4x2.6 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55 | 2x2.0 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55 |
| GPU | Mali-G615 MC2 | Mali-G52 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 | Yes |
| Speaker Type | Dual Stereo | |
| Audio Features | 400% Volume | |
| Document Reader | Yes | Yes |
Battery
| Type | Non-Removable Battery | Non-Removable Battery |
| Size | 7000 mAh | 4000 mAh, Li-Po Battery |
| Fast Charging | Yes, 45W Ultra Charge | Yes, 18W Fast Charging |
| Reverse Charging | Yes, 5W | |
| Bypass Charging | Yes |
Discuss
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