Nubia Z80 Ultra vs Xiaomi Redmi K90
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Overview
| Specs Score | 89 / 100 Better Specs | 85 / 100 |
| Display Resolution | 1216 x 2688 pixels Better Resolution | 1156 x 2510 pixels |
| Storage | 512 GB More Storage | 256 GB |
| CPU Clock Speed | 4.6 GHz Faster Clock Speed | 4.32 GHz |
| Front Camera | 16 MP | 20 MP Better Front Camera Resolution |
| Weight | 227 g | 206 g Lighter |
| Thickness | 8.6 mm | 8 mm Slimmer |
| Unique Features | Water Resistant Wireless Charging No | No No Reverse Charging |
General
| Model | NX741J | K90 |
| 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 |
| Release Date | October 22, 2025 | October 27, 2025 |
Design
| Dimensions | 77.2 x 164.5 x 8.6 mm | 75.25 x 157.49 x 8 mm |
| Weight | 227 g | 206 g |
| Bezel less | Yes | |
| Colors | Black, Silver, Starry Blue, Luo Tian Yi Red |
Display
| Type | Color AMOLED Screen (1B Colors) | Color AMOLED Screen (1B Colors) |
| Touch | Yes | Yes, 480 Hz Touch Sampling Rate |
| Size | 6.85 inches, 1216 x 2688 pixels, 144 Hz | 6.59 inches, 1156 x 2510 pixels, 120 Hz |
| Aspect Ratio | 20:9 | 20:9 |
| PPI | ~ 431 PPI | ~ 419 PPI |
| Screen to Body Ratio | ~ 89.5% | ~ 87.5% |
| Brightness | 2000 nits (peak) | 3500nits |
| Features | 2592Hz PWM, HDR10 | |
| Notch | Yes, Punch Hole |
Memory
| RAM | 12 GB | 12 GB |
| Storage | 512 GB | 256 GB |
| Storage Type | UFS 4.1 | UFS 4 |
Connectivity
| GPRS | Yes | Yes |
| EDGE | Yes | Yes |
| 3G | Yes | Yes |
| 4G | Yes | Yes |
| 5G | Yes | Yes |
| 5G Bands | n1/n3/n5/n7/n8/n28/n66/n38/n40/n41/n48/n77/n78 | |
| VoLTE | Yes, Dual Stand-By | Yes |
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot |
| Wifi Version | Wi-Fi 802.11 a/b/g/n/ac/6e/7, dual-band | Wi-Fi 7 |
| Bluetooth | Yes, v5.4, A2DP, LE | Yes, v5.4, A2DP, LE |
| USB | Yes, USB-C v3.2 | Yes, USB-C v2.0 |
| USB Features | USB Tethering, USB on-the-go, USB Charging | USB on-the-go, USB Charging |
| IR Blaster | Yes | Yes |
Extra
| GPS | Yes, with A-GPS (L1+L2+L5), GLONASS (G1+G5), BDS (B1I+B1C+B2a+B2b), GALILEO (E1+E5a), QZSS (L1+L5) | Yes, with A-GPS. Up to tri-band: GLONASS, BDS, GALILEO, QZSS, NavIC |
| Fingerprint Sensor | Yes, In Display | Yes, In Display |
| Face Unlock | Yes | Yes |
| Sensors | Accelerometer, Gyro, Proximity, Compass | Accelerometer, Gyro, Proximity, Compass, Color Spectrum |
| 3.5mm Headphone Jack | No | No |
| NFC | Yes | Yes |
| Water Resistance | Yes, 1.5 m upto 30 min | |
| Splash Resistant | Yes | |
| IP Rating | IP68 | |
| Dust Resistant | Yes | No |
Camera
| Rear Camera | 50 MP ƒ/1.7 35mm (standard), 1/1.3", 1.2µm, PDAF, OIS 64 MP ƒ/2.5 (Telephoto) 85mm (periscope telephoto), 1/2.0", 0.7µm, multi-directional PDAF (15cm - ∞), OIS, 3.3x optical zoom (vs. 26mm cam) 50 MP ƒ/1.8 (Ultra Wide) 18mm (ultrawide), 1/1.55", PDAF | 50 MP (Wide Angle) 50 MP (Telephoto) 8 MP (Wide Angle) |
| OIS | Yes | Yes |
| Auto Focus | Yes | Yes |
| Features | Laser AF, Color Spectrum Sensor, Ring- Dual-tone , Panorama, DSG HDR | |
| Video Recording | 4K, 1080p | 8K @ 24 fps UHD, 4K @ 30/60 fps UHD, 1080p @ 30/60 fps FHD, 720p @ 1920 fps HD |
| Flash | Yes, LED | Yes, Dual LED |
| Front Camera | 16 MP ƒ/2 (Wide Angle) Under Display | 20 MP (Wide Angle) Punch Hole |
| Front Video Recording | 1080p @ 30 fps FHD | 1080p @ 30 fps FHD |
Technical
| OS | Android v16 | Android v16 |
| Custom UI | MyOS 15 | HyperOS 3 |
| Chipset | Qualcomm Snapdragon 8 Elite Gen 5 | Qualcomm Snapdragon 8 Elite |
| CPU | 4.6 GHz, Octa Core Processor | 4.32 GHz, Octa Core Processor |
| Core Details | 2x4.6 GHz Oryon V3 Phoenix L + 6x3.62 GHz Oryon V3 Phoenix M | 2x Prime Core@4.32 GHz & 6x Performance Core@3.53 GHz |
| GPU | Adreno 840 | Adreno GPU |
| Java | No | No |
| Browser | Yes | Yes |
Multimedia
| Yes | Yes | |
| Music | Yes | Yes |
| Video | Yes | Yes |
| FM Radio | No | No |
| Document Reader | Yes | Yes |
Battery
| Type | Non-Removable Battery | Non-Removable Battery |
| Size | 7200 mAh, Si/C Li-Ion | 7100 mAh |
| Fast Charging | Yes, 90W Fast Charging | Yes, 100W Fast charging |
| Wireless Charging | Yes, 80W | |
| Reverse Charging | Yes, 22.5W |
Discuss
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