OnePlus Ace 6 Ultra vs Xiaomi Redmi K90 Max
Quick Comparison
Both OnePlus Ace 6 Ultra and Xiaomi Redmi K90 Max comes with same RAM. In terms of display resolution, OnePlus Ace 6 Ultra has better resolution of 2772 x 1272 than Xiaomi Redmi K90 Max which has resolution of 2608 x 1200. Both have the same amount of internal memory.
| Name | OnePlus Ace 6 Ultra | Xiaomi Redmi K90 Max |
| RAM | 12 GB | 12 GB |
|---|---|---|
| Display | 6.78 in | 6.9 in |
| Internal Memory | 256 GB | 256 GB |
| Battery | 8600 mAh | 7500 mAh |
| Camera | 50 MP + 8 MP Dual | 50 MP + 50 MP Dual |
| Price | Rs. 44990 | Rs. 45990 |
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Detailed Comparison
Price And Launch
The launch Date of the first phone is April 28, 2026. The Expected cost of OnePlus Ace 6 Ultra is Rs. 44990. The launch Date of the second phone is expected to be October 23, 2026 (Expected). The Expected cost of Xiaomi Redmi K90 Max is Rs. 45990.
Display comparison
Xiaomi Redmi K90 Max has larger screen size of 6.9 inches in comparison to OnePlus Ace 6 Ultra's 6.78 inch screen. OnePlus Ace 6 Ultra has AMOLED Screen type where as Xiaomi Redmi K90 Max has LTPO AMOLED Screen type. OnePlus's phone has display density of 450 PPI & Xiaomi's phone has only 416 PPI display density. In terms of screen to body ratio, Xiaomi's phone has better screen to body ratio of ~ 91.8% than OnePlus's phone ~ 89.3%. Both mobiles have same aspect ratio of 20:9.
Memory comparison
Both mobiles come with 12 GB RAM and both have same Internal Memory of 256 GB.
Camera comparison
They both have the same 50 MP + 8 MP Dual Rear Camera. Xiaomi Redmi K90 Max will be better choice if you're looking to click lot of selfies as it has better 32 MP Front Camera in comparison to OnePlus Ace 6 Ultra's 16 MP Front Camera.
Technical comparison
Both the phones run on Android Operating System Version 16.
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Full Comparison
| Name | OnePlus Ace 6 Ultra | Xiaomi Redmi K90 Max |
| General | ||
| Model | Ace 6 Ultra | |
| 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 | April 28, 2026 | October 23, 2026 (Expected) |
| Design | ||
| Dimensions | 77.5 x 162.5 x 8.5 mm | |
| Weight | 217 g | |
| Bezel less | No | |
| Colors | Ace Awakening, Metal Storm | Black, White, Denim Blue, Lamborgini White |
| Display | ||
| Type | Color AMOLED Screen (1B Colors) | Color LTPO AMOLED Screen (68 B) |
| Touch | Yes | Yes, 240 Hz Touch Sampling Rate |
| Size | 6.78 inches, 1272 x 2772 pixels, 165 Hz | 6.9 inches, 1200 x 2608 pixels, 120 Hz |
| Aspect Ratio | 20:9 | 20:9 |
| PPI | ~ 450 PPI | ~ 416 PPI |
| Screen to Body Ratio | ~ 89.3% | ~ 91.8% |
| Glass Type | Crystal Shield Glass | Xiaomi Dragon Crystal Glass |
| Brightness | 800 nits (typ), 1800 nits (HBM) | 3500 nits (peak) |
| HDR Support | Yes, HDR10+, Dolby Vision | Yes, HDR10+, Dolby Vision |
| Adaptive Refresh Rate | Yes, LTPO | |
| Features | PWM, Dolby Vision, HDR10+ | 2160Hz PWM, 120Hz, Dolby Vision, HDR Vivid, HDR10+ |
| Notch | Yes, Punch Hole | Yes, Punch Hole |
| Curved Display | Yes | |
| Memory | ||
| RAM | 12 GB | 12 GB |
| Storage | 256 GB | 256 GB |
| Storage Type | UFS 4.1 | UFS 4.1 |
| Card Slot | No | |
| Connectivity | ||
| GPRS | Yes | Yes |
| EDGE | Yes | Yes |
| 3G | Yes | Yes |
| 4G | Yes | Yes |
| 5G | Yes | Yes |
| 5G Bands | SA: n1/2/3/5/7/8/20/28/38/40/41/48/66*/77/78/79, NSA: n1/3/5/7/8/20/28/38/40/41/66*/77/78/79 | |
| VoLTE | Yes, Dual Stand-By | Yes, Dual Stand-By |
| Vo5G | Yes | Yes |
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot |
| Wifi Version | Wi-Fi 7 | |
| Bluetooth | Yes, v6.0 | Yes, v5.4, A2DP, LE, aptX HD |
| USB | Yes, USB-C v2.0 | Yes, USB-C v3.2 |
| USB Features | USB Tethering, USB on-the-go, USB Charging | USB Tethering, USB on-the-go, USB Charging |
| IR Blaster | Yes | Yes |
| Extra | ||
| GPS | Yes with A-GPS | with GPS, Galileo, GLONASS, Beidou, NAVIC |
| Fingerprint Sensor | Yes, In Display | Yes, In Display |
| Face Unlock | Yes | Yes |
| Sensors | Accelerometer, Gyro, Proximity, Compass | Accelerometer, Proximity, Gyro, Compass |
| 3.5mm Headphone Jack | No | No |
| NFC | Yes | Yes |
| Water Resistance | Yes, 1.5 m upto 30 min | Yes, 1.5 m upto 30 min |
| IP Rating | IP66/IP68/IP69/IP69K | IP68 |
| Dust Resistant | Yes | Yes |
| Camera | ||
| Rear Camera | 50 MP ƒ/1.8 (Wide Angle) 23mm (wide), 1/1.55", PDAF, OIS 8 MP ƒ/2.2 (Ultra Wide) 16mm, 112˚ (ultrawide) | 50 MP (Wide Angle) 50 MP (Ultra Wide) |
| Camera Sensor | Sony IMX906 | |
| OIS | Yes | Yes |
| Auto Focus | Yes | Yes |
| Features | HDR, panorama | Color spectrum sensor, HDR, panorama |
| Video Recording | 4K @ 60 fps UHD, 1080p @ 60 fps FHD | 4K, 8K, 1080p, 720p |
| Flash | Yes, LED | Yes, LED |
| Front Camera | 16 MP ƒ/2.4 (Wide Angle) Punch Hole, Screen Flash | 32 MP ƒ/2.2 (Wide Angle) Punch Hole, Autofocus, Screen Flash |
| Front Video Recording | 1080p | 4K, 1080p |
| Technical | ||
| OS | Android v16 | Android v16 |
| Custom UI | HyperOS 3 | |
| Chipset | Mediatek Dimensity 9500 | Mediatek Dimensity 9500 |
| CPU | 4.21 GHz, Octa Core Processor | Octa Core Processor |
| Core Details | 1x4.21 GHz C1-Ultra & 3x3.5 GHz C1-Premium & 4x2.7 GHz C1-Pro | |
| Fabrication Node | 3nm | |
| GPU | Mali-G1 Ultra MC12 | |
| Java | No | No |
| Browser | Yes | Yes |
| Multimedia | ||
| Yes | Yes | |
| Music | Yes | MP3, FLAC, APE, AAC, OGG, WAV, WMA, AMR, AWB |
| Video | Yes | MP4, MKV, AVI, WMV, WEBM, 3GP, ASF playback |
| FM Radio | No | No |
| Document Reader | Yes | Yes |
| Battery | ||
| Type | Non-Removable Battery | Non-Removable Battery |
| Size | 8600 mAh, Si/C | 7500 mAh, Li-Po Battery |
| Fast Charging | Yes, 120W SUPERVOOC Charging | Yes, 100W Fast Charging |
| Wireless Charging | Yes, 50W | |
| Reverse Charging | Yes | Yes |
| Reverse Wireless Charging | Yes, 22.5W | |