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- Redmi K90 Ultra vs Xiaomi Redmi 4A
Redmi K90 Ultra vs Xiaomi Redmi 4A comparison
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| key specs | ||||
| Display | 6.83-inch | 5.00-inch | ||
| Front Camera | 20-megapixel | 5-megapixel | ||
| Rear Camera | 50-megapixel + 8-megapixel | 13-megapixel | ||
| RAM | 12GB | 2GB | ||
| Storage | 256GB | 16GB | ||
| Battery Capacity | 8550mAh | 3120mAh | ||
| OS | Android 16 | Android 6.0 | ||
| Resolution | 1280x2772 pixels | 720x1280 pixels | ||
| Processor | - | Qualcomm Snapdragon 425 | ||
| general | ||||
| Brand | Xiaomi | Xiaomi | ||
| Model | Redmi K90 Ultra | Redmi 4A | ||
| Release date | June 30, 2026 | November 1, 2016 | ||
| Launched in India | No | Yes | ||
| Dimensions (mm) | 162.91 x 77.93 x 8.18 | 139.50 x 70.40 x 8.50 | ||
| Weight (g) | 227.00 | 131.50 | ||
| Battery capacity (mAh) | 8550 | 3120 | ||
| Fast charging | 100W Fast Charging | - | ||
| Colours | Space Silver, Shadow Black and Sky Blue | Golden, Rose Gold, Dark Grey | ||
| Form factor | - | Touchscreen | ||
| Removable battery | - | No | ||
| display | ||||
| Refresh Rate | 165 Hz | - | ||
| Resolution Standard | 1.5K | - | ||
| Screen size (inches) | 6.83 | 5.00 | ||
| Resolution | 1280x2772 pixels | 720x1280 pixels | ||
| Touchscreen | - | Yes | ||
| Aspect ratio | - | 16:9 | ||
| Pixels per inch (PPI) | - | 296 | ||
| hardware | ||||
| Processor make | Snapdragon 8 Elite | Qualcomm Snapdragon 425 | ||
| RAM | 12GB | 2GB | ||
| Internal storage | 256GB | 16GB | ||
| Processor | - | 1.4GHz quad-core | ||
| Expandable storage | - | Yes | ||
| Expandable storage type | - | microSD | ||
| Expandable storage up to (GB) | - | 128 | ||
| camera | ||||
| Rear camera | 50-megapixel + 8-megapixel | 13-megapixel (f/2.2) | ||
| No. of Rear Cameras | 2 | - | ||
| Front camera | 20-megapixel | 5-megapixel (f/2.2) | ||
| No. of Front Cameras | 1 | - | ||
| Rear flash | - | Dual LED | ||
| software | ||||
| Operating system | Android 16 | Android 6.0 | ||
| Skin | HyperOS 3 | MIUI 8 | ||
| connectivity | ||||
| Wi-Fi 7 | Yes | - | ||
| GPS | Yes | Yes | ||
| Bluetooth | Yes | Yes, v 4.10 | ||
| NFC | Yes | No | ||
| USB Type-C | Yes | - | ||
| Wi-Fi | - | Yes | ||
| Wi-Fi standards supported | - | 802.11 a/b/g/n | ||
| Infrared | - | Yes | ||
| USB OTG | - | Yes | ||
| Headphones | - | 3.5mm | ||
| FM | - | Yes | ||
| Number of SIMs | - | 2 | ||
| Wi-Fi Direct | - | Yes | ||
| Mobile High-Definition Link (MHL) | - | No | ||
| sensors | ||||
| Fingerprint sensor | Yes | - | ||
| Compass/ Magnetometer | Yes | No | ||
| Proximity sensor | Yes | Yes | ||
| Accelerometer | Yes | Yes | ||
| Ambient light sensor | Yes | Yes | ||
| Gyroscope | Yes | Yes | ||
| Barometer | - | No | ||
| Temperature sensor | - | No | ||
| ratings | ||||
| Overall NDTV Rating | - | Read Review | ||
| Design Rating | - | |||
| Display Rating | - | |||
| Software Rating | - | |||
| Performance Rating | - | |||
| Battery Life Rating | - | |||
| Camera Rating | - | |||
| Value for Money Rating | - | |||
| sim 1 | ||||
| SIM Type | - | Micro-SIM | ||
| GSM/CDMA | - | GSM | ||
| 3G | - | Yes | ||
| 4G/ LTE | - | Yes | ||
| sim 2 | ||||
| SIM Type | - | Nano-SIM | ||
| GSM/CDMA | - | GSM | ||
| 3G | - | Yes | ||
| 4G/ LTE | - | Yes | ||
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