OnePlus Ace 6 Ultra vs Xiaomi Redmi K90
Quick Comparison
Both OnePlus Ace 6 Ultra and Xiaomi Redmi K90 comes with same RAM. Both have the same amount of internal memory.
| Name | OnePlus Ace 6 Ultra | Xiaomi Redmi K90 |
| RAM | 12 GB | 12 GB |
|---|---|---|
| Display | 6.78 in | 6.59 in |
| Internal Memory | 256 GB | 256 GB |
| Battery | 7000 mAh | 7100 mAh |
| Camera | 50 MP + 50 MP Dual | 50 MP + 50 MP + 8 MP Triple |
| Price | Rs. 39990 | Rs. 35990 |
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Detailed Comparison
Price And Launch
The cost of OnePlus Ace 6 Ultra is Rs. 39990. The launch Date of the second phone is October 27, 2025. The Expected cost of Xiaomi Redmi K90 is Rs. 35990.
Display comparison
OnePlus Ace 6 Ultra has larger screen size of 6.78 inches in comparison to Xiaomi Redmi K90's 6.59 inch screen. There is AMOLED Screen Type in both the phones. In terms of screen to body ratio, OnePlus's phone has better screen to body ratio of ~ 90.8% than Xiaomi's phone ~ 87.5%. Both mobiles have same aspect ratio of 20:9.
Memory comparison
Both phones come with 12 GB RAM and both have same Internal Memory of 256 GB.
Camera comparison
They both have the same 50 MP + 50 MP Dual Rear Camera. OnePlus Ace 6 Ultra will be better choice if you're looking to click lot of selfies as it has better 32 MP Front Camera in comparison to Xiaomi Redmi K90's 20 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 16 version.
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Full Comparison
| Name | OnePlus Ace 6 Ultra | Xiaomi Redmi K90 |
| General | ||
| Model | Ace 6 Ultra | 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 27, 2025 | |
| Design | ||
| Dimensions | 75.25 x 157.49 x 8 mm | |
| Weight | 206 g | |
| Bezel less | No | |
| Display | ||
| Type | Color AMOLED Screen (1B Colors) | Color AMOLED Screen (1B Colors) |
| Touch | Yes | Yes, 480 Hz Touch Sampling Rate |
| Size | 6.78 inches, 144 Hz | 6.59 inches, 1156 x 2510 pixels, 120 Hz |
| Aspect Ratio | 20:9 | 20:9 |
| PPI | ~ 419 PPI | |
| Screen to Body Ratio | ~ 90.8% | ~ 87.5% |
| Brightness | 3500nits | |
| Notch | Yes, Punch Hole | Yes, Punch Hole |
| Curved Display | Yes | |
| Memory | ||
| RAM | 12 GB | 12 GB |
| Storage | 256 GB | 256 GB |
| Storage Type | UFS | UFS 4 |
| Card Slot | No | |
| 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 |
| Vo5G | Yes | |
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot |
| Wifi Version | Wi-Fi 7 | |
| Bluetooth | Yes | Yes, v5.4, A2DP, LE |
| USB | Yes, USB-C | 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 | 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 | |
| Splash Resistant | Yes | |
| Dust Resistant | Yes | No |
| Camera | ||
| Rear Camera | 50 MP (Wide Angle) 50 MP (Ultra Wide) | 50 MP (Wide Angle) 50 MP (Telephoto) 8 MP (Wide Angle) |
| Camera Sensor | Sony IMX906 | |
| OIS | Yes | Yes |
| Auto Focus | Yes | Yes |
| Features | Color spectrum sensor, HDR, panorama | |
| Video Recording | 4K @ 60 fps UHD, 1080p @ 60 fps FHD | 8K @ 24 fps UHD, 4K @ 30/60 fps UHD, 1080p @ 30/60 fps FHD, 720p @ 1920 fps HD |
| Flash | Yes, Dual LED | Yes, Dual LED |
| Front Camera | 32 MP (Wide Angle) Punch Hole, Screen Flash | 20 MP (Wide Angle) Punch Hole |
| Front Video Recording | 1080p @ 30 fps FHD | 1080p @ 30 fps FHD |
| Technical | ||
| OS | Android v15 | Android v16 |
| Custom UI | HyperOS 3 | |
| Chipset | Qualcomm Snapdragon 8 Elite | |
| CPU | Octa Core Processor | 4.32 GHz, Octa Core Processor |
| Core Details | 2x Prime Core@4.32 GHz & 6x Performance Core@3.53 GHz | |
| GPU | 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 | 7000 mAh, Si/C | 7100 mAh |
| Fast Charging | Yes, 100W SUPERVOOC Charging | Yes, 100W Fast charging |
| Reverse Charging | Yes, 7.5W | Yes, 22.5W |