Phone Comparison
Compare Xiaomi Redmi K90 Ultra vs ZTE RedMagic Astra 2
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
Too Close
Better Display
ZTE RedMagic Astra 2
Better Performance
Too Close
Better Value
ZTE RedMagic Astra 2
Overview
| Spec | Xiaomi Redmi K90 Ultra | ZTE RedMagic Astra 2 |
|---|---|---|
| Brand | Xiaomi | ZTE |
| Category | Flagship | Gaming |
| Price | $440 | $549 |
| Display | 6.83 inches | 9.06 inches |
| Processor | Snapdragon 8 Onyon V2 Elite (3 nm) | Snapdragon 8 Elite Gen 5 (3 nm) |
| RAM | 12GB, 16GB | 12GB, 16GB |
| Storage | 256GB, 512GB | 256GB, 512GB, 1TB |
| Battery | Si/C Li-ion 8550 mAh | 8300 mAh |
| Main Camera | 50 MP | 13 MP |
| OS | Android 16, HyperOS 3 | Android 16, Redmagic OS 11.5 |
Network
| Spec | Xiaomi Redmi K90 Ultra | ZTE RedMagic Astra 2 |
|---|---|---|
| Technology | GSM / HSPA / LTE / 5G | No cellular connectivity |
| 2G Bands | GSM 850 / 900 / 1800 / 1900 | N/A |
| 3G Bands | HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100 | N/A |
| 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 | N/A |
| 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 | ZTE RedMagic Astra 2 |
|---|---|---|
| Size | 6.83 inches, 114.5 cm² (~90.3% screen-to-body ratio) | 9.06 inches, 238.3 cm^2 (85.7% screen-to-body ratio) |
| Resolution | 1280 x 2772 pixels, 19.5:9 ratio (~447 ppi density) | 1504x 2400 pixels, 16:10 ratio (~313 ppi density) |
| Type | AMOLED, 68B colors, PWM | LTPS OLED, 1B colors, PWM |
| Refresh Rate | 165Hz | 185Hz |
| Brightness | 9500 nits (peak) | 1000 nits (typ), 1600 nits (peak) |
| Protection | N/A | Corning Gorilla Glass (unspecified version) |
| HDR | Dolby Vision, HDR10+ | Not Specified |
Performance
| Spec | Xiaomi Redmi K90 Ultra | ZTE RedMagic Astra 2 |
|---|---|---|
| Chipset | Qualcomm SM8750-AB Snapdragon 8 Onyon V2 Elite (3 nm) | Qualcomm SM8850-1-AD Snapdragon 8 Elite Gen 5 (3 nm) |
| CPU | Octa-core (2x4.32 GHz Oryon V2 Phoenix L + 6x3.53 GHz Oryon V2 Phoenix M) | Octa-core (2x4.74 GHz Oryon V3 Phoenix L + 6x3.62 GHz Oryon V3 Phoenix M) |
| GPU | Adreno 830 (1200 MHz) | Adreno 840 (1.3GHz) |
| RAM | 12GB, 16GB | 12GB, 16GB |
| Storage | 256GB, 512GB | 256GB, 512GB, 1TB |
| Storage Type | UFS 4.1 | UFS 4.1 Pro |
| Expandable | No | No |
Main Camera
| Spec | Xiaomi Redmi K90 Ultra | ZTE RedMagic Astra 2 |
|---|---|---|
| Type | Dual | Single |
| Main | 50 MP, f/1.7, 24mm (wide), 1/1.55", 1.0µm, PDAF, OIS | 13 MP, (wide) |
| 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+ | 4K@30fps, 1080p@30fps |
Selfie Camera
| Spec | Xiaomi Redmi K90 Ultra | ZTE RedMagic Astra 2 |
|---|---|---|
| Type | Single | Single |
| Selfie | 20 MP (wide) | 9 MP, f/2.2, (wide), 0.7μm |
| Video | 1080p@30/60fps | 1080p@30fps |
Battery
| Spec | Xiaomi Redmi K90 Ultra | ZTE RedMagic Astra 2 |
|---|---|---|
| Capacity | Si/C Li-ion 8550 mAh | 8300 mAh |
| Charging | 100W wired, 100W PPS, PD3.0 | 80W wired |
| Bypass Charging | N/A | Available |
| Reverse | 22.5W reverse wired | N/A |
Body
| Spec | Xiaomi Redmi K90 Ultra | ZTE RedMagic Astra 2 |
|---|---|---|
| Dimensions | 162.9 x 77.9 x 8.2 mm (6.41 x 3.07 x 0.32 in) | 207.1 x 134 x 6.9 mm (8.15 x 5.28 x 0.27 in) |
| Weight | 227 g (8.01 oz) | 363 g (12.80 oz) |
| Build | Glass front, aluminum frame | Glass front, aluminum frame, aluminum back |
| SIM | Nano-SIM + Nano-SIM | No |
| Water Resistance | IP68/IP69 dust tight and water resistant (high pressure water jets; immsersible up to 1.5m for 30 min) | N/A |
| Colors | Black, Blue, Silver | Eclipse Black, Starfrost Silver |
Features & Connectivity
| Spec | Xiaomi Redmi K90 Ultra | ZTE RedMagic Astra 2 |
|---|---|---|
| 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/6, dual-band |
| NFC | Yes | No |
| USB | USB Type-C, OTG | Dual USB Type-C 3.2 Gen2 & USB Type-C 2.0, Display Port, magnetic connector pins |
| Biometrics | Fingerprint (under display, optical) | Fingerprint (side-mounted) |
| Sensors | Accelerometer, proximity, gyro, compass | Accelerometer, gyro, proximity, compass |
Audio
| Spec | Xiaomi Redmi K90 Ultra | ZTE RedMagic Astra 2 |
|---|---|---|
| Audio | Yes, with stereo speakers (with Dolby Atmos) | Yes, with stereo speakers |
| 3.5mm Jack | No | No |
| 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 (Native 24-bit/192kHz Hi-Res Audio decoding, Snapdragon Sound, aptX HD, LDAC, and LHDC 5.0 wireless streaming via Bluetooth 5.4, paired with dual 1620 stereo speakers featuring DTS:X Ultra 3D tuning) |