In depth comparison and review of Xiaomi MI A3 and Samsung Galaxy S21 FE 5G. Compare sizes, cameras, batteries, memory, and other important specifications and features to easily choose the right phone for you. Our goal is to help you uncover differences between the products and find the phone that will best fit your needs.
DESIGN AND DIMENSIONS | Xiaomi MI A3 | Samsung Galaxy S21 FE 5G |
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Product Type | Smartphone | Smartphone | |
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Manufacturer Model Number | - | SM-G990B/DS | |
Form Factor | Touch | Touch | |
Height | 153.48 mm | 155.7 mm | Samsung Galaxy S21 FE 5G has greater height than Xiaomi MI A3. |
Width | 71.85 mm | 74.5 mm | Samsung Galaxy S21 FE 5G has greater width than Xiaomi MI A3. |
Depth | 8.475 mm | 7.9 mm | Samsung Galaxy S21 FE 5G is narrower than Xiaomi MI A3. |
Weight | 173.8 g | 177 g | Xiaomi MI A3 is lighter than Xiaomi MI A3. |
Body Colour | Kind of grey | Olive | Graphite | White | Lavender | |
Body Material | Corning Gorilla Glass 5 | - | |
Protection | - | Dustproof, splashproof, water-resistant | |
Waterproof (Water-resistant) | - | - | |
IP rating | - | IP68 | |
SAR Value | 2.34 W/kg (limb), 1.097 W/kg (body), 0.301 W/kg (head) | 1.48 W/kg (body), 0.952 W/kg (head), 2.91 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 | |
SIM Card Type (Size) | Nano SIM | Nano SIM | |
SIM Card Qty | Dual-SIM | Dual-SIM |
DISPLAY | Xiaomi MI A3 | Samsung Galaxy S21 FE 5G |
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Display Type | OLED display | OLED display | |
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Display Technology | AMOLED | Infinity-O Dynamic AMOLED 2X | |
Screen Size (Display Size) | 6.088" | 6.4" | Samsung Galaxy S21 FE 5G has larger screen size than Xiaomi MI A3. |
Screen Resolution (Display Resolution) | 1560 x 720 pixels | 2340 x 1080 pixels | Samsung Galaxy S21 FE 5G has better screen resolution than Xiaomi MI A3. |
Display Format | HD+ | Full HD+ | |
Pixel Density | - | 401 ppi | |
Aspect Ratio | 19.5:9 | - | |
Colour Depth | - | 16.7 million colours | |
Contrast Ratio | 60000:1 | - | |
HDR Technology | - | HDR10+ | |
Display Enhancement Technology | - | Eye Comfort Shield | |
Display Refresh Rate | - | 120 Hz | |
Display Features | 2.5D Glass, Dot Drop display | AOD(Always On Display), Infinity O display, Video Wallpaper | |
Display Protection (Screen Protector) | Corning Gorilla Glass 5 (scratch resistant glass) | Corning Gorilla Glass Victus (scratch resistant glass) |
PROCESSOR | Xiaomi MI A3 | Samsung Galaxy S21 FE 5G |
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Processor Type (CPU) | Qualcomm Snapdragon 665 | - | |
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Clock Speed | 2 GHz | 2.84 GHz | Samsung Galaxy S21 FE 5G has higher clock speed than Xiaomi MI A3. |
Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
Graphics System (GPU) | Qualcomm ADRENO 610 | - |
MEMORY | Xiaomi MI A3 | Samsung Galaxy S21 FE 5G |
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RAM | LPDDR4X SDRAM - 4 GB | 6 GB | Samsung Galaxy S21 FE 5G has more RAM than Xiaomi MI A3. |
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Internal Memory Size (Storage Capacity) | 64 GB | 128 GB | Samsung Galaxy S21 FE 5G has more internal memory than Xiaomi MI A3. |
User Memory | - | 101.1 GB | |
Supported Flash Memory Cards (Expandable Memory) | Up to 256 GB | - |
CAMERA | Xiaomi MI A3 | Samsung Galaxy S21 FE 5G |
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MAIN CAMERA |
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Number of Main Cameras | 3 | 3 | |
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Sensor Resolution | 48 Megapixel | 12 Megapixel | Xiaomi MI A3 has better camera resolution than Samsung Galaxy S21 FE 5G. |
Sensor Size | 1/2" | 1/1.76" | Xiaomi MI A3 has better camera sensor size than Samsung Galaxy S21 FE 5G. |
Lens Type | - | Wide-angle lens | |
Lens Aperture | F/1.79 | F/1.8 | Xiaomi MI A3 has better lens aperture than Xiaomi MI A3. |
Lens Construction | 6-element | - | |
Field of View (FoV) | - | 79 degree(s) | |
Pixel Size | 1.6 μm | 1.8 μm | Samsung Galaxy S21 FE 5G has larger camera pixel size than Xiaomi MI A3. |
Optical Image Stabiliser (OIS) | - | Optical Image Stabiliser (OIS) | Samsung Galaxy S21 FE 5G has optical stabilisation. |
Focus Adjustment | Automatic | Automatic | |
Optical Zoom | - | 3x | |
Digital Zoom | - | 30x | |
Special Effects | - | Face retouch, Grid Line | |
HDR Mode | - | Auto HDR mode | |
Camera Modes | AI portrait mode | Night mode, portrait mode | |
Light Source | Flash | LED flash | |
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 1280 x 720 (720p) at 240 fps, 3840 x 2160 (4K) at 60 fps, Slo-mo video 1280 x 720 (720p) at 960 fps | |
Camera Features (Functions) | Phase Detect Auto-Focus (PDAF), Electronic Image Stabiliser (EIS), 4-in-1 Super Pixel, AI scene detection, AI Triple camera, 27 different scenes | Dual recording |
SECOND CAMERA |
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Sensor Resolution (2nd Camera) | 8 Megapixel | 12 Megapixel | Samsung Galaxy S21 FE 5G has better second camera resolution than Xiaomi MI A3. |
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Lens Type (2nd Camera) | Ultra wide-angle lens | Ultra wide-angle lens | |
Lens Aperture (2nd Camera) | F/2.2 | F/2.2 | Both phones have the same second camera lens aperture. |
Field of View (2nd Camera) | 118 degree(s) | 123 degree(s) | Samsung Galaxy S21 FE 5G has larger second camera lens field of view than Xiaomi MI A3. |
Pixel Size (2nd Camera) | - | 1.12 μm |
THIRD CAMERA |
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Sensor Resolution (3rd Camera) | 2 Megapixel | 8 Megapixel | Samsung Galaxy S21 FE 5G has higher resolution third camera than Xiaomi MI A3. |
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Lens Type (3rd Camera) | - | Telephoto lens | |
Lens Aperture (3rd Camera) | - | F/2.4 | |
Field of View (3rd Camera) | - | 32 degree(s) | |
Pixel Size (3rd Camera) | - | 1 μm | |
Camera Functions (3rd Camera) | Depth camera | - | |
Camera Features (3rd Camera) | - | Space Zoom x30 |
FRONT CAMERA |
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Number of Front Cameras | 1 | 1 | |
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Sensor Resolution (Front) | 32 Megapixel | 32 Megapixel | Both phones have the same front camera resolution. |
Lens Aperture (Front) | F/2.0 | F/2.2 | Xiaomi MI A3 has better front lens aperture than Xiaomi MI A3. |
Lens Element Qty (Front) | 5-element | - | |
Field of View (Front) | 79 degree(s) | 81 degree(s) | Samsung Galaxy S21 FE 5G has larger front lens field of view than Xiaomi MI A3. |
Pixel Size (Front) | 1.6 μm | 0.8 μm | Xiaomi MI A3 has larger front camera pixel size than Samsung Galaxy S21 FE 5G. |
Focus Adjustment | Focus free | Focus free | |
Camera Modes (Front) | Selfie panorama, AI portrait mode, AI Beautify | - | |
Video Resolutions (Front) | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps | - | |
Camera Features (Front) | 4-in-1 Super Pixel technology, AI scene detection, 12 different scenes, AI Selfie, Palm shutter, AI face unlock | - |
BATTERY AND CHARGING | Xiaomi MI A3 | Samsung Galaxy S21 FE 5G |
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Battery Capacity (Battery Size) | 4030 mAh | 4500 mAh | Samsung Galaxy S21 FE 5G has larger battery capacity than Xiaomi MI A3. |
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Fast Charging Technology | Qualcomm Quick Charge 3.0 | Samsung Fast Charging | Both phones have fast charging technology. |
Wireless Charging | - | Yes | Samsung Galaxy S21 FE 5G can be charged wirelessly. |
Wireless Charging Standards | - | Wireless PowerShare | |
Talk Time | - | 2220 minutes | |
Run Time Details | - | Talk (LTE): up to 2220 min Active online usage (LTE): up to 13 hrs Active online usage (Wi-Fi): up to 13 hrs Playback (video): up to 16 hrs Playback (audio): up to 79 hrs |
CELLULAR | Xiaomi MI A3 | Samsung Galaxy S21 FE 5G |
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Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
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Mobile Broadband Generation | 4G | 5G | Samsung Galaxy S21 FE 5G has more advanced generation mobile network. |
Operating System | - | Android 12 | |
Intelligent Assistant | Google Assistant | Bixby | |
Payment Technology | - | Samsung Pay | |
Navigation | GPS, A-GPS, GLONASS, BeiDou | GPS, GLONASS, BeiDou, Galileo, QZSS |
COMMUNICATIONS | Xiaomi MI A3 | Samsung Galaxy S21 FE 5G |
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Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE | FDD-LTE, TDD-LTE, 5G NR FR1 | |
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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 4, Band 5, Band 8 | |
3G UMTS Frequency | 2100, 1900, 1700, 850, 900 | 2100, 1900, 1700, 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 4, Band 5, Band 7, Band 8, Band 12, Band 17, Band 20, Band 26, Band 28, Band 32, Band 38, Band 40, Band 41, Band 66 | |
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 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 700a, FDD 700b, FDD 800 DD, FDD 850+, FDD 700 APT, FDD 1500 L, TDD 2600, TDD 2300, TDD 2500, FDD 1700 - 2110 AWS-3 | |
5G NR Band | - | N1, n3, n5, n7, n8, n20, n28, n38, n41, n66, n78, n40 | |
5G NR Frequency | - | FDD 2100, FDD 1800, FDD 850, FDD 2600, FDD 900, FDD 800, FDD 700APT, TDD TD 2600, TDD TD 2500, FDD AWS-3, TDD TD 3500, TDD 2300 | |
Wireless Interface | Infrared (IrDA), IEEE 802.11a/b/g/n/ac | IEEE 802.11a/b/g/n/ac | |
Bluetooth | Bluetooth 5.0 | Bluetooth 5.0 | |
NFC | - | Yes | Samsung Galaxy S21 FE 5G has NFC reader for mobile payments. |
Messaging Services | SMS, MMS | - |
MEDIA | Xiaomi MI A3 | Samsung Galaxy S21 FE 5G |
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Supported Digital Audio Standards | WAV, AAC, PCM, MP3, FLAC, AAC +, eAAC+, AMR-WB, AMR-NB | WAV, AAC, AMR, MP3, FLAC, XMF, OGG, MIDI, APE (Monkey's Audio), M4A, DSF, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, DFF, MID | |
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Supported Digital Video Standards | MKV, XviD, H.264, M4V, MPEG4-ASP, MPEG-4 SP, MP4 | MKV, FLV, AVI, 3GP, M4V, WebM, 3G2, MP4 | |
Sound Enhancements | - | Dolby Digital Plus sound, Dolby Atmos sound technology, Surround sound, stereo speakers tuned by AKG, Dolby Digital sound |
FEATURES | Xiaomi MI A3 | Samsung Galaxy S21 FE 5G |
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Phone Functions | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | - | |
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Sensors | Accelerometer, ambient light sensor, proximity sensor, digital compass, gyro sensor, vibration sensor | Accelerometer, proximity sensor, barometer, gyro sensor, hall sensor, geomagnetic sensor, light sensor | |
Security Devices | Fingerprint reader (under display) | Fingerprint reader | |
Additional Phone Features | AI face unlock | MIMO technology, Fast Charging, Samsung KNOX, Samsung DeX support, Samsung Smart Switch, Game mode |
OTHERS | Xiaomi MI A3 | Samsung Galaxy S21 FE 5G |
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Included Accessories | Power adapter, SIM card removal tool, USB-C cable, soft case | SIM card removal tool, USB-C cable | |
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Compliant Standards | - | IP68 | |
Max Depth of Water Resistance | - | 1.5 m |