Phone Comparison
Compare Xiaomi Redmi K90 Ultra vs Realme P4x 4G
Full specs, price, score, camera, battery, display, network, and performance comparison in one side-by-side matrix.
Better Camera
Xiaomi Redmi K90 Ultra
Better Battery
Xiaomi Redmi K90 Ultra
Better Display
Xiaomi Redmi K90 Ultra
Better Performance
Xiaomi Redmi K90 Ultra
Better Value
Xiaomi Redmi K90 Ultra
Overview
| Spec | Xiaomi Redmi K90 Ultra | Realme P4x 4G |
|---|---|---|
| Brand | Xiaomi | Realme |
| Category | Flagship | Entry Level Phones |
| Price | $440 | $160 |
| Display | 6.83 inches | 6.8 inches |
| Processor | Snapdragon 8 Onyon V2 Elite (3 nm) | Unisoc T7250 (12 nm) |
| RAM | 12GB, 16GB | 4GB |
| Storage | 256GB, 512GB | 64GB, 256GB |
| Battery | Si/C Li-ion 8550 mAh | 8000 mAh |
| Main Camera | 50 MP | 50 MP |
| OS | Android 16, HyperOS 3 | Android 16 |
Network
| Spec | Xiaomi Redmi K90 Ultra | Realme P4x 4G |
|---|---|---|
| Technology | GSM / HSPA / LTE / 5G | GSM / HSPA / LTE |
| 2G Bands | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 |
| 3G Bands | HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100 | HSDPA 850 / 900 / 2100 |
| 4G Bands | 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 34, 38, 39, 40, 41, 42, 48, 66 | 1, 3, 5, 7, 8, 20, 28, 38, 40, 41 |
| 5G Bands | 1, 3, 5, 7, 8, 28, 38, 40, 41, 48, 66, 77, 78 SA/NSA | N/A |
| Speed | HSPA, LTE, 5G | N/A |
Display
| Spec | Xiaomi Redmi K90 Ultra | Realme P4x 4G |
|---|---|---|
| Size | 6.83 inches, 114.5 cm² (~90.3% screen-to-body ratio) | 6.8 inches, 113.0 cm^2 (~86.8% screen-to-body ratio) |
| Resolution | 1280 x 2772 pixels, 19.5:9 ratio (~447 ppi density) | 720 x 1570 pixels, 19.5:9 ratio (~254 ppi density) |
| Type | AMOLED, 68B colors, PWM | IPS LCD |
| Refresh Rate | 165Hz | 120Hz |
| Brightness | 9500 nits (peak) | 700 nits (typ) |
| HDR | Dolby Vision, HDR10+ | N/A |
Performance
| Spec | Xiaomi Redmi K90 Ultra | Realme P4x 4G |
|---|---|---|
| Chipset | Qualcomm SM8750-AB Snapdragon 8 Onyon V2 Elite (3 nm) | Unisoc T7250 (12 nm) |
| CPU | Octa-core (2x4.32 GHz Oryon V2 Phoenix L + 6x3.53 GHz Oryon V2 Phoenix M) | Octa-core (2x1.8 GHz Cortex-A75 & 6x1.6 GHz Cortex-A55) |
| GPU | Adreno 830 (1200 MHz) | Mali-G57 MP1 |
| RAM | 12GB, 16GB | 4GB |
| Storage | 256GB, 512GB | 64GB, 256GB |
| Storage Type | UFS 4.1 | eMMC 5.1 |
| Expandable | No | microSDXC |
Main Camera
| Spec | Xiaomi Redmi K90 Ultra | Realme P4x 4G |
|---|---|---|
| Type | Dual | Single |
| Main | 50 MP, f/1.7, 24mm (wide), 1/1.55", 1.0µm, PDAF, OIS | 50 MP, f/1.8, (wide), AF |
| Ultrawide | 8 MP, f/2.2, 15mm (ultrawide), 1/4.0", 1.12µm | N/A |
| Features | Color spectrum sensor, LED flash, HDR, panorama | LED flash, HDR, panorama |
| Video | 8K@30fps, 4K@30/60fps, 1080p@30/60/120/240/960fps, 720p@1920fps, gyro-EIS, HDR10+ | 1080p@30fps |
Selfie Camera
| Spec | Xiaomi Redmi K90 Ultra | Realme P4x 4G |
|---|---|---|
| Type | Single | Single |
| Selfie | 20 MP (wide) | 5 MP, f/2.2, (wide) |
| Video | 1080p@30/60fps | 720p@30fps |
Battery
| Spec | Xiaomi Redmi K90 Ultra | Realme P4x 4G |
|---|---|---|
| Capacity | Si/C Li-ion 8550 mAh | 8000 mAh |
| Charging | 100W wired, 100W PPS, PD3.0 | 45W wired, 45W PPS, 15W PD, 13W QC |
| Reverse | 22.5W reverse wired | 10W reverse wired |
Body
| Spec | Xiaomi Redmi K90 Ultra | Realme P4x 4G |
|---|---|---|
| Dimensions | 162.9 x 77.9 x 8.2 mm (6.41 x 3.07 x 0.32 in) | 166.5 x 78.2 x 8.8 mm (6.56 x 3.08 x 0.35 in) |
| Weight | 227 g (8.01 oz) | 219 g (7.72 oz) |
| Build | Glass front, aluminum frame | Glass front, plastic frame, plastic back |
| SIM | Nano-SIM + Nano-SIM | Nano-SIM + Nano-SIM |
| Water Resistance | IP68/IP69 dust tight and water resistant (high pressure water jets; immsersible up to 1.5m for 30 min) | IP64 dust tight and water resistant (water splashes) |
| Colors | Black, Blue, Silver | Phantom Blue, Rally White |
Features & Connectivity
| Spec | Xiaomi Redmi K90 Ultra | Realme P4x 4G |
|---|---|---|
| Connectivity | Wi-Fi 802.11 a/b/g/n/ac/6/7, dual-band, Wi-Fi Direct | Wi-Fi 802.11 a/b/g/n/ac, dual-band |
| NFC | Yes | No |
| USB | USB Type-C, OTG | USB Type-C 2.0, OTG |
| Biometrics | Fingerprint (under display, optical) | Fingerprint (side-mounted) |
| Sensors | Accelerometer, proximity, gyro, compass | Accelerometer, gyro, proximity, compass |
Audio
| Spec | Xiaomi Redmi K90 Ultra | Realme P4x 4G |
|---|---|---|
| Audio | Yes, with stereo speakers (with Dolby Atmos) | Yes |
| 3.5mm Jack | No | Yes |
| High Bitrate Audio | Yes (Native 24-bit/192kHz Hi-Res Audio mastering, Bose-tuned 1115X symmetrical dual stereo speakers, Dolby Atmos, Snapdragon Sound, and high-definition LDAC/LHDC 5.0 streaming via Bluetooth 5.4 and Type-C 3.2) | Yes (Includes a legacy 3.5mm analog headphone jack and handles standard high-res digital audio containers like FLAC, alongside stable wireless audio broadcasting through standard Bluetooth 5.2 streams) |