Xiaomi Redmi K90 vs Vivo S21 Pro
Quick Comparison
Both Xiaomi Redmi K90 and Vivo S21 Pro comes with same RAM. In terms of display resolution, Vivo S21 Pro has better resolution of 2800 x 1260 than Xiaomi Redmi K90 which has resolution of 2510 x 1156. Both have the same amount of internal memory.
| Name | Xiaomi Redmi K90 | Vivo S21 Pro |
| RAM | 12 GB | 12 GB |
|---|---|---|
| Display | 6.59 in | 6.74 in |
| Internal Memory | 256 GB | 256 GB |
| Battery | 7100 mAh | 6500 mAh |
| Camera | 50 MP + 50 MP + 8 MP Triple | 50 MP Quad |
| Price | Rs. 35990 | Rs. 44990 |
Related Products
Detailed Comparison
Price And Launch
The launch Date of the first phone is October 27, 2025. The Expected cost of Xiaomi Redmi K90 is Rs. 35990. The launch Date of the second phone is expected to be November 28, 2025 (Expected). The cost of Vivo S21 Pro is Rs. 44990.
Display comparison
Xiaomi Redmi K90 has screen size of 6.59 inches which falls short to Vivo S21 Pro's 6.74 inch screen. Both the phones have AMOLED Screen Type. Vivo's phone has display density of 460 PPI & Xiaomi's phone has only 419 PPI display density. In terms of screen to body ratio, Vivo's phone has better screen to body ratio of ~ 89.2% than Xiaomi's phone ~ 87.5%.
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 + 50 MP + 8 MP Triple Rear Camera. Vivo S21 Pro will be better choice if you're looking to click lot of selfies as it has better 50 MP Front Camera in comparison to Xiaomi Redmi K90's 20 MP Front Camera.
Technical comparison
Both the phones run on Android Operating System Version 16.
Related Comparisons
Full Comparison
| Name | Xiaomi Redmi K90 | Vivo S21 Pro |
| General | ||
| Model | K90 | S21 Pro |
| 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 | November 28, 2025 (Expected) |
| Design | ||
| Dimensions | 75.25 x 157.49 x 8 mm | |
| Weight | 206 g | |
| Display | ||
| Type | Color AMOLED Screen (1B Colors) | Color AMOLED Screen (1B Colors) |
| Touch | Yes, 480 Hz Touch Sampling Rate | Yes |
| Size | 6.59 inches, 1156 x 2510 pixels, 120 Hz | 6.74 inches, 1260 x 2800 pixels, 120 Hz |
| Aspect Ratio | 20:9 | |
| PPI | ~ 419 PPI | ~ 460 PPI |
| Screen to Body Ratio | ~ 87.5% | ~ 89.2% |
| Brightness | 3500nits | |
| Notch | Yes, Punch Hole | Yes, Punch Hole |
| Memory | ||
| RAM | 12 GB | 12 GB |
| Storage | 256 GB | 256 GB |
| Storage Type | UFS 4 | UFS 3.1 |
| 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 | Yes |
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot |
| Wifi Version | Wi-Fi 7 | |
| Bluetooth | Yes, v5.4, A2DP, LE | Yes, v6.0 |
| USB | Yes, USB-C v2.0 | Yes, USB-C v2.0 |
| USB Features | USB on-the-go, USB Charging | USB Tethering, USB on-the-go, USB Charging |
| IR Blaster | Yes | Yes |
| Extra | ||
| GPS | Yes, with A-GPS. Up to tri-band: GLONASS, BDS, GALILEO, QZSS, NavIC | Yes |
| Fingerprint Sensor | Yes, In Display | Yes, In Display |
| Face Unlock | Yes | |
| Sensors | Accelerometer, Gyro, Proximity, Compass, Color Spectrum | Accelerometer, Gyro, Proximity, Compass |
| 3.5mm Headphone Jack | No | No |
| NFC | Yes | Yes |
| Water Resistance | Yes, 1.5 m upto 30 min | |
| Splash Resistant | Yes | |
| IP Rating | IP65 | |
| Dust Resistant | No | Yes |
| Camera | ||
| Rear Camera | 50 MP (Wide Angle) 50 MP (Telephoto) 8 MP (Wide Angle) | 50 MP ƒ/1.9 (Wide Angle) 23mm (wide), 1/1.56", PDAF, OIS 50 MP (Telephoto) 50 MP (Ultra Wide) 50 MP |
| OIS | Yes | Yes |
| Auto Focus | Yes | Yes |
| Features | Panorama, HDR | |
| Video Recording | 8K @ 24 fps UHD, 4K @ 30/60 fps UHD, 1080p @ 30/60 fps FHD, 720p @ 1920 fps HD | 4K, 1080p |
| Flash | Yes, Dual LED | Yes, LED |
| Front Camera | 20 MP (Wide Angle) Punch Hole | 50 MP ƒ/2 (Wide Angle) Punch Hole |
| Front Video Recording | 1080p @ 30 fps FHD | 4K, 1080p |
| Technical | ||
| OS | Android v16 | Android v16 |
| Custom UI | HyperOS 3 | |
| Chipset | Qualcomm Snapdragon 8 Elite | Mediatek Dimensity 9400 |
| CPU | 4.32 GHz, Octa Core Processor | 3.63 GHz, Octa Core Processor |
| Core Details | 2x Prime Core@4.32 GHz & 6x Performance Core@3.53 GHz | 1xCortex-X925@3.63 GHz & 3xCortex-X4@3.3 GHz & 4xCortex-A720@2.4 GHz |
| GPU | Adreno GPU | Immortalis-G925 |
| 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 | 7100 mAh | 6500 mAh, Si/C |
| Fast Charging | Yes, 100W Fast charging | Yes, 100W |
| Reverse Charging | Yes, 22.5W | Yes |