Side-by-side technical data
Xiaomi Redmi 8A Dual vs Xiaomi Redmi K90
Comparison between Xiaomi Redmi 8A Dual and Xiaomi Redmi K90: camera, battery, fast charging, display, performance and colors, side by side. More phones from Xiaomi.
NeoTeo's verdict
Which of the two is the better buy
The Xiaomi Redmi K90 is the clear pick for performance, display, and more versatile cameras; the Redmi 8A Dual makes sense for someone who needs Google services or expandable storage. The overall scores are far apart, too: 8.4 to 3.6.
The K90's 6.59″ AMOLED display reaches 3500 nits, while the 8A Dual has a 6.22″ IPS LCD panel rated at 400 nits. The K90 also pairs 16 GB of RAM and UFS 4.1 with the 8A Dual's 3 GB and eMMC 5.1. Its 7100 mAh battery supports 100 W charging, against 5000 mAh and 18 W on the 8A Dual.
For cameras, the K90 has a 50 MP main camera with optical image stabilization, plus telephoto and ultrawide cameras; the 8A Dual has a 13 MP main camera and neither extra camera. The K90 also adds 5G, NFC, and Bluetooth 5.4, versus LTE, no NFC, and Bluetooth 4.2 on the 8A Dual. The older phone is lighter at 188 g versus 206 g, and supports expandable storage.
Xiaomi Redmi 8A Dual
The Xiaomi Redmi 8A Dual is the better buy for someone who needs Google services and expandable storage.
Xiaomi Redmi K90
The Xiaomi Redmi K90 is the better buy for someone who wants a brighter AMOLED display, a more powerful chip, and 100 W charging.
The verdict
Your pick: Xiaomi Redmi K90, ahead on Design & display, Performance & hardware, Camera, Connectivity and Battery & charging.
| Category | Redmi 8A Dual | Redmi K90 |
|---|---|---|
| Design & display | 4.4 | 8.8 |
| Performance & hardware | 1.9 | 9.3 |
| Camera | 3.0 | 7.6 |
| Connectivity | 4.0 | 7.9 |
| Battery & charging | 6.0 | 8.3 |
Which one is for you?
Xiaomi Redmi 8A Dual, if you care about…
- Weight
- 188 g
- against 206 g
- Expandable Storage
- Yes
- against No
- Google Services
- Yes
- against No
Xiaomi Redmi K90, if you care about…
- Battery Capacity
- 7,100 mAh
- against 5,000 mAh
- AnTuTu Score
- 2,920,000
- against 118,350
- RAM Capacity
- 16 GB
- against 3 GB
- Wi-Fi Standards
- Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6 (802.11ax), Wi-Fi 7 (802.11be), Wi-Fi 802.11a/b/g
- against Wi-Fi 802.11 b/g/n
Specification comparison
Performance
| Specification | Redmi 8A Dual | Redmi K90 |
|---|---|---|
| Processor Model | Qualcomm Snapdragon 439 | Qualcomm Snapdragon 8 Elite |
| Processor Process Size | 12 nm | 3 nm Best value |
| Graphics GPU | Qualcomm Adreno 505 | Qualcomm Adreno 830 |
| Storage Type | eMMC 5.1 | UFS 4.1 Best value |
| Maximum CPU Clock | 1.95 GHz | 4.47 GHz Best value |
| Maximum Storage Capacity | 64 GB | 1 TB Best value |
| AnTuTu Score | 118,350 | 2,920,000 Best value |
| Geekbench 6 Single-Core | — | 3,234 |
| Geekbench 6 Multi-Core | — | 10,059 |
| CPU Description | Octa-core: 4 × Cortex-A53 at 1.95 GHz and 4 × Cortex-A53 at 1.45 GHz. | Octa-core processor with 2x4.32 GHz Oryon V2 Phoenix L cores and 6x3.53 GHz Oryon V2 Phoenix M cores. |
| Processor Type | Octa-Core | Octa-Core |
| 64-Bit Processor | Yes | Yes |
| RAM Capacity | 3 GB | 16 GB Best value |
| RAM Type | LPDDR3 | LPDDR5X Best value |
| Expandable Storage | Yes Best value | No |
| AnTuTu version | v9 | v10 |
Design
| Specification | Redmi 8A Dual | Redmi K90 |
|---|---|---|
| Body Colors | White, Blue, Grey | Black, White, Blue, Purple |
| Body Thickness | 9.4 mm | 8 mm Best value |
| Body Width | 75.4 mm | 75.3 mm |
| Body Height | 156.5 mm | 157.5 mm |
| Weight | 188 g Best value | 206 g |
| Usable Surface | 81.8 % | 89.8 % Best value |
| Body Materials | Glass, Plastic, P2i Nano Coating | Glass, Aluminium Alloy Best value |
| Resistance Features | Water Resistant | IP68, IP69 |
| Waterproof Depth | — | 1.5 m |
Battery
| Specification | Redmi 8A Dual | Redmi K90 |
|---|---|---|
| Battery Capacity | 5,000 mAh | 7,100 mAh Best value |
| Battery Type | Li-Polymer | Si-Carbon Li-Ion Best value |
| Fast Charge Power | 18 W | 100 W Best value |
| Battery Features | Fast Charging, Reverse Charging, Non-Removable | Non-Removable, Rechargeable, Fast Charging, Reverse Charging, Reverse Wireless Charging, Battery Level Indicator Best value |
| Reverse wireless charging power | — | 22.5 W |
Display
| Specification | Redmi 8A Dual | Redmi K90 |
|---|---|---|
| Display Aspect Ratio | 19:9 | 19.5:9 |
| Display Technology | IPS LCD | AMOLED Best value |
| Peak Display Brightness | 400 nits | 3,500 nits Best value |
| Display Diagonal | 6.22″ | 6.59″ Best value |
| Display Horizontal Resolution | 720 px | 1,156 px Best value |
| Display Vertical Resolution | 1,520 px | 2,510 px Best value |
| Display Pixel Density | 270 ppi | 419 ppi Best value |
| Display Refresh Rate | — | 120 Hz |
| Touch Sampling Rate | — | 480 Hz |
| Display Contrast Ratio | 1,500 :1 | — |
| Display Features | Gorilla Glass 5, IPS LCD, Water Drop Notch, Capacitive Touch, Multi-Touch | Hole-Punch Notch, LTPO, Dolby Vision, HDR10+, HDR10, Always-On Display, Capacitive Touch, Multi-Touch, DC Dimming, DCI-P3, 10-Bit Panel, 120Hz, 2,592Hz PWM, TÜV Rheinland Low Blue Light, TÜV Rheinland Flicker-Free Certified, TÜV Rheinland Eye Comfort Certification, Scratch Resistant |
Sensors
| Specification | Redmi 8A Dual | Redmi K90 |
|---|---|---|
| Fingerprint Sensor Placement | — | Under Display |
Sensor
| Specification | Redmi 8A Dual | Redmi K90 |
|---|---|---|
| Sensor Features | Accelerometer, Compass, Light Sensor, Proximity Sensor | Fingerprint Sensor, Accelerometer, Gyroscope, Proximity Sensor, Compass, Light Sensor, RGB Sensor, Ultrasonic Proximity Sensor, Cooling System |
Software
| Specification | Redmi 8A Dual | Redmi K90 |
|---|---|---|
| Operating System | Android 9 | Android 16 |
| OS Family | Android | Android |
| OS Version | 9 | 16 Best value |
| Google Services | Yes Best value | No |
Connectivity
| Specification | Redmi 8A Dual | Redmi K90 |
|---|---|---|
| SIM Configurations | Dual Nano-SIM, Dual SIM Dual Standby | Dual Nano-SIM, Dual SIM Dual Standby |
| Cellular Bands | 2G GSM 850, 2G GSM 900, 2G GSM 1800, 2G GSM 1900, 2G CDMA BC0, 2G CDMA BC1, 2G GSM B2, 2G GSM B3, 2G GSM B5, 2G GSM B8, 3G UMTS B1, 3G UMTS B2, 3G UMTS B5, 3G UMTS B8, 3G UMTS B850, 3G UMTS B900, 3G UMTS 1900, 3G UMTS 2100, 4G LTE B1, 4G LTE B3, 4G LTE B5, 4G LTE B8, 4G LTE B40, 4G LTE B41 | 2G GSM 850, 2G GSM 900, 2G GSM 1800, 2G GSM 1900, 3G UMTS 800, 3G UMTS B850, 3G UMTS B900, 3G UMTS 1700 AWS, 3G UMTS 1900, 3G UMTS 2100, 4G LTE B1, 4G LTE B3, 4G LTE B4, 4G LTE B5, 4G LTE B7, 4G LTE B8, 4G LTE B19, LTE B28, 4G LTE B34, 4G LTE B38, 4G LTE B39, 4G LTE B40, 4G LTE B41, 4G LTE B42, 4G LTE B48, 4G LTE B66, 5G NR n1, 5G NR n3, 5G NR n5, 5G NR n7, 5G NR n8, 5G NR n28, 5G NR n38, 5G NR n40, 5G NR n41, 5G NR n48, 5G NR n66, 5G NR n77, 5G NR n78 |
| Cellular Technologies | GSM, HSPA, LTE | GSM, HSPA, LTE, 5G Best value |
| Wi-Fi Standards | Wi-Fi 802.11 b/g/n | Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6 (802.11ax), Wi-Fi 7 (802.11be), Wi-Fi 802.11a/b/g Best value |
| Wi-Fi Features | Wi-Fi Direct, Wi-Fi Hotspot, Wi-Fi Display, Wi-Fi 802.11 b/g/n | Dual Band, Wi-Fi Hotspot, Wi-Fi Direct, Wi-Fi Display, MIMO |
| Bluetooth Version | Bluetooth 4.2 | Bluetooth 5.4 Best value |
| Bluetooth Profiles | A2DP, LE | A2DP, LE, LHDC 5.0, ASHA |
| Navigation Systems | GPS, A-GPS, GLONASS, BeiDou | GPS, A-GPS, GLONASS, BeiDou, Galileo, QZSS, NavIC Best value |
| Connectivity Features | 3.5 mm Audio Jack, FM Radio, USB Charging, USB Mass Storage, USB OTG, USB Host, USB Type-C, Computer Sync, OTA Sync, Tethering, VoLTE | Infrared, NFC, USB Type-C, USB OTG, USB Host 2.0, USB 3.2, Computer Sync, DLNA, OTA Sync, Tethering, VoLTE, USB Charging, USB Mass Storage |
| USB Version | USB 2.0 | USB 3.2 Best value |
| SAR American Head | 0.34 W/kg | — |
| SAR American Body | 1 W/kg | — |
| Max. download speed | — | 10,000 Mbps |
| Max. upload speed | — | 3,500 Mbps |
Audio
| Specification | Redmi 8A Dual | Redmi K90 |
|---|---|---|
| Audio Features | A2DP, LE, Loudspeaker | Stereo Speakers, Dolby Atmos, Noise-Cancellation Microphone, Hi-Res Audio, Hi-Res Wireless Audio, LHDC 5, ASHA, A2DP, LE Best value |
Technical
| Specification | Redmi 8A Dual | Redmi K90 |
|---|---|---|
| Model numbers | M2001C3K3I | 2510DRK44C |
