Detailed comparison and review of Xiaomi MI 9T and Samsung Galaxy A21s. With our comprehensive overview, you can simply compare sizes, functions, but also other key features of both phones and easily decide which one is the right choice for you. Our goal is to help you identify the main differences between products and find the phone that best fits your needs and expectations.
| DESIGN AND DIMENSIONS | Xiaomi MI 9T | Samsung Galaxy A21s |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | - | SM-A217F/DSN | |
| Form Factor | Touch | Touch | |
| Height | 156.7 mm | 163.7 mm | Samsung Galaxy A21s has greater height than Xiaomi MI 9T. |
| Width | 74.3 mm | 75.3 mm | Samsung Galaxy A21s has greater width than Xiaomi MI 9T. |
| Depth | 8.8 mm | 8.9 mm | Xiaomi MI 9T is narrower than Xiaomi MI 9T. |
| Weight | 191 g | 192 g | Xiaomi MI 9T is lighter than Xiaomi MI 9T. |
| Body Colour | Carbon black | Glacier blue | White | Blue | Black | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | 1.511 W/kg (body), 1.341 W/kg (head) | 1.544 W/kg (body), 0.422 W/kg (head), 2.21 W/kg (limb) | |
| Connector Type | USB Type-C - 24 pin USB-C Headset jack - mini-phone 3.5mm |
USB Type-C - 24 pin USB-C Headset jack - mini-phone 3.5mm |
|
| SIM Card Type (Size) | Nano SIM | Nano SIM | |
| SIM Card Qty | Dual-SIM | Dual-SIM |
| DISPLAY | Xiaomi MI 9T | Samsung Galaxy A21s |
|---|
| Display Type | OLED display | LCD display | |
|---|---|---|---|
| Display Technology | AMOLED | PLS TFT | |
| Screen Size (Display Size) | 6.39" | 6.5" | Samsung Galaxy A21s has larger screen size than Xiaomi MI 9T. |
| Screen Resolution (Display Resolution) | 2340 x 1080 pixels | 1600 x 720 pixels | Xiaomi MI 9T has better screen resolution than Samsung Galaxy A21s. |
| Display Format | Full HD+ | HD+ | |
| Pixel Density | 403 ppi | - | |
| Aspect Ratio | 19.5:9 | 20:9 | |
| Max Brightness | 600 cd/m² | - | |
| Colour Depth | - | 16.7 million colours | |
| Contrast Ratio | 60000:1 | - | |
| HDR | Yes | - | Xiaomi MI 9T has HDR. |
| HDR Technology | HDR10 | - | |
| Display Enhancement Technology | Sunshine mode 2.0 | - | |
| Display Features | Reading mode, Colour temperature adjustment, night mode, 256 ranks adjustable Reading mode, Dark mode, Multi-colour Always-on display, Dynamic display | Infinity O display | |
| Display Protection (Screen Protector) | Corning Gorilla Glass 5 (scratch resistant glass) | - |
| PROCESSOR | Xiaomi MI 9T | Samsung Galaxy A21s |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 730 | - | |
|---|---|---|---|
| Clock Speed | 2.2 GHz | 2 GHz | Xiaomi MI 9T has higher clock speed than Samsung Galaxy A21s. |
| Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
| 64-bit Architecture | Yes | - | Xiaomi MI 9T has 64-bit architecture. |
| Graphics System (GPU) | Qualcomm ADRENO 618 | - |
| MEMORY | Xiaomi MI 9T | Samsung Galaxy A21s |
|---|
| RAM | 6 GB | 3 GB | Xiaomi MI 9T has more RAM than Samsung Galaxy A21s. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 64 GB | 32 GB | Xiaomi MI 9T has more internal memory than Samsung Galaxy A21s. |
| User Memory | - | 19.5 GB | |
| Supported Flash Memory Cards (Expandable Memory) | - | microSDHC, microSDXC - up to 512 GB |
| CAMERA | Xiaomi MI 9T | Samsung Galaxy A21s |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 3 | 4 | |
|---|---|---|---|
| Sensor Resolution | 48 Megapixel | 48 Megapixel | Both phones have the same camera resolution. |
| Sensor Size | 1/2" | - | |
| Sensor Name | Sony Exmor RS IMX582 sensor | - | |
| Lens Type | Wide-angle lens | Wide-angle lens | |
| Lens Aperture | F/1.75 | F/2.0 | Xiaomi MI 9T has better lens aperture than Xiaomi MI 9T. |
| Field of View (FoV) | - | 80 degree(s) | |
| Pixel Size | 1.6 μm | - | |
| Focus Adjustment | Automatic | Automatic | |
| Laser Auto Focus | Yes | - | |
| Optical Zoom | 2x | - | |
| Digital Zoom | 10x | 8x | Xiaomi MI 9T has better digital zoom than Samsung Galaxy A21s. |
| Special Effects | HDR | - | |
| Camera Modes | Burst mode, Panorama, Pro mode, AI Beautify, Smart ultra-wide angle mode, Photo timer, Custom watermark, Full body portrait mode, Baby Beautify, AI smart slimming | Live Focus mode | |
| Face Recognition (Face ID) | Face recognition | - | Xiaomi MI 9T has face detection. |
| Light Source | Flash | LED flash | |
| Still Image Resolutions | 8000 x 6000 | - | |
| Video Resolutions | 1920 x 1080 (1080p) at 30 fps, 1920 x 1080 (1080p) at 60 fps, 1280 x 720 (720p) at 30 fps, Slo-mo video 1920 x 1080 (1080p) at 120 fps, Slo-mo video 1280 x 720 (720p) at 240 fps, 3840 x 2160 (4K) at 30 fps, Slo-mo video 1280 x 720 (720p) at 120 fps, Slo-mo video 1920 x 1080 (1080p) at 240 fps, Slo-mo video 1920 x 1080 (1080p) at 960 fps, Slo-mo video 1280 x 720 (720p) at 960 fps | 1920 x 1080 (1080p) at 30 fps | |
| Camera Features (Functions) | Phase Detect Auto-Focus (PDAF), Continuous Auto Focus (CAF), video stabilisation, 4-in-1 Super Pixel, AI scene detection, AI studio lighting, Video Beautify, AI Triple camera, 960 fps Smart audio pairing, AI lens flare, AI high resolution photos, Portrait mode background blur adjustment, Ultra wide-angle edge distortion correction, Group photo face correction, Portrait mode background blurring, Motion tracking | Live Focus |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 8 Megapixel | 8 Megapixel | Both phones have the same second camera resolution. |
|---|---|---|---|
| Lens Type (2nd Camera) | Telephoto lens | Ultra wide-angle lens | |
| Lens Aperture (2nd Camera) | F/2.4 | F/2.2 | Samsung Galaxy A21s has better second camera lens aperture than Xiaomi MI 9T. |
| Field of View (2nd Camera) | - | 123 degree(s) | |
| Pixel Size (2nd Camera) | 1.12 μm | - | |
| Optical Zoom | 2x | - |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | 13 Megapixel | 2 Megapixel | Xiaomi MI 9T has higher resolution third camera than Samsung Galaxy A21s. |
|---|---|---|---|
| Lens Type (3rd Camera) | Ultra wide-angle lens | - | |
| Lens Aperture (3rd Camera) | F/2.4 | F/2.4 | Both phones have the same lens aperture of the third camera. |
| Field of View (3rd Camera) | 124.8 degree(s) | - | |
| Pixel Size (3rd Camera) | 1.12 μm | - | |
| Camera Functions (3rd Camera) | - | Macro camera | |
| Camera Features (3rd Camera) | - | 4cm macro photography |
| FOURTH CAMERA |
|---|
| Sensor Resolution (4th Camera) | - | 2 Megapixel | |
|---|---|---|---|
| Lens Aperture (4th Camera) | - | F/2.4 | |
| Camera Functions (4th Camera) | - | Depth camera |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Front Camera Design | Pop-up | - | |
| Sensor Resolution (Front) | 20 Megapixel | 13 Megapixel | Xiaomi MI 9T has better front camera resolution than Samsung Galaxy A21s. |
| Lens Aperture (Front) | F/2.2 | F/2.2 | Both phones have the same front camera lens aperture. |
| Pixel Size (Front) | 0.8 μm | - | |
| Focus Adjustment | - | Focus free | |
| Special Effects (Front) | HDR, Magic mirror | - | |
| Camera Modes (Front) | Selfie panorama, AI portrait mode, AI Beautify, AI makeup | - | |
| Face Recognition (Face ID) | Face recognition | - | Xiaomi MI 9T has face detection. |
| Video Resolutions (Front) | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps | - | |
| Camera Features (Front) | Self-timer, age recognition, AI scene detection, AI studio lighting, Eye light, AI feature adjustment, sapphire crystal lens cover, ambient bulb, Palm shutter, AI silhouette detection, wide-angle distortion correction, camera display brightness correction | - |
| BATTERY AND CHARGING | Xiaomi MI 9T | Samsung Galaxy A21s |
|---|
| Battery Capacity (Battery Size) | 4000 mAh | 5000 mAh | Samsung Galaxy A21s has larger battery capacity than Xiaomi MI 9T. |
|---|---|---|---|
| Talk Time | - | 3240 minutes | |
| Run Time Details | - | Active online usage (4G): up to 23 hrs Active online usage (Wi-Fi): up to 23 hrs Playback (video): up to 21 hrs Playback (audio): up to 109 hrs Talk (4G): up to 3240 min |
|
| Battery Technology | - | Lithium Ion |
| CELLULAR | Xiaomi MI 9T | Samsung Galaxy A21s |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
| Operating System | Android 9.0 Pie | - | |
| User Interface | MIUI 10 | One UI | |
| Payment Technology | Google Pay | - | |
| Navigation | GPS, GLONASS, BeiDou, Galileo | GPS, GLONASS, BeiDou, Galileo |
| COMMUNICATIONS | Xiaomi MI 9T | Samsung Galaxy A21s |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, VoLTE, FDD-LTE, TDD-LTE | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE | |
|---|---|---|---|
| 2G Band | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | |
| 3G UMTS Band | Band 1, Band 2, Band 4, Band 5, Band 8 | Band 1, Band 2, Band 5, Band 8 | |
| 3G UMTS Frequency | 2100, 1900, 1700, 850, 900 | 2100, 1900, 850, 900 | |
| 4G LTE Band | Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 20, Band 28, Band 38, Band 40 | Band 1, Band 2, Band 3, Band 5, Band 7, Band 8, Band 20, Band 28, Band 38, Band 40, Band 41 | |
| 4G LTE Frequency | FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 800 DD, FDD 700 APT, TDD 2600, TDD 2300 | FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 850, FDD 2600, FDD 900, FDD 800 DD, FDD 700 APT, TDD 2600, TDD 2300, TDD 2500 | |
| Wireless Interface | IEEE 802.11a/b/g/n/ac | IEEE 802.11a/b/g/n/ac | |
| Bluetooth | Bluetooth 5.0 | Bluetooth 5.0 LE | |
| NFC | Yes | Yes | Both phones have an NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | SMS, MMS |
| MEDIA | Xiaomi MI 9T | Samsung Galaxy A21s |
|---|
| Supported Digital Audio Standards | WAV, AAC, AMR, MP3, FLAC, APE (Monkey's Audio), apt-X, LDAC, apt-X HD | WAV, WMA, AAC, AMR, MP3, FLAC, XMF, OGG, MIDI, M4A, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, MID | |
|---|---|---|---|
| Supported Digital Video Standards | MKV, VC-1, XviD, MPEG-4, H.264, M4V, VP8, VP9 | MKV, FLV, AVI, WMV, ASF, 3GP, M4V, WebM, 3G2, MP4 | |
| Sound Enhancements | Hi-Fi Sound support, Hi-Res audio, Qualcomm TrueWireless Stereo Plus | Dolby Atmos sound technology |
| FEATURES | Xiaomi MI 9T | Samsung Galaxy A21s |
|---|
| Phone Functions | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | |
|---|---|---|---|
| Sensors | Accelerometer, digital compass, gyro sensor, distance sensor, In-screen ambient light sensor | Accelerometer, proximity sensor, gyro sensor, geomagnetic sensor | |
| Security Devices | Fingerprint reader (under display) | Face recognition, fingerprint reader | |
| Additional Phone Features | HD Voice, Dual microphones, MU-MIMO technology, Fast Charging, MI Turbo, GAME Turbo 2.0 | Samsung KNOX, Virtual Light Sensing |
| OTHERS | Xiaomi MI 9T | Samsung Galaxy A21s |
|---|
| Included Accessories | Protective cover, power adapter, SIM card removal tool, USB-C cable | Power adapter | |
|---|---|---|---|
| Compliant Standards | VDE | - |
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