In depth comparison and review of Xiaomi MI A3 and Samsung Galaxy A51 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 A51 5G |
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Product Type | Smartphone | Smartphone | |
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Manufacturer Model Number | - | SM-A516B/DS | |
Form Factor | Touch | Touch | |
Height | 153.48 mm | 158.9 mm | Samsung Galaxy A51 5G has greater height than Xiaomi MI A3. |
Width | 71.85 mm | 73.6 mm | Samsung Galaxy A51 5G has greater width than Xiaomi MI A3. |
Depth | 8.475 mm | 8.7 mm | Xiaomi MI A3 is narrower than Xiaomi MI A3. |
Weight | 173.8 g | 187 g | Xiaomi MI A3 is lighter than Xiaomi MI A3. |
Body Colour | Kind of grey | Prism cube black | Prism cube white | |
Body Material | Corning Gorilla Glass 5 | - | |
Waterproof (Water-resistant) | - | - | |
SAR Value | 2.34 W/kg (limb), 1.097 W/kg (body), 0.301 W/kg (head) | 1.555 W/kg (body), 0.496 W/kg (head) | |
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 |
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SIM Card Type (Size) | Nano SIM | Nano SIM | |
SIM Card Qty | Dual-SIM | Dual-SIM | |
SIM Card Configuration Details | - | Nano SIM + nano SIM/microSD |
DISPLAY | Xiaomi MI A3 | Samsung Galaxy A51 5G |
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Display Type | OLED display | OLED display | |
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Display Technology | AMOLED | Infinity-O Super AMOLED | |
Screen Size (Display Size) | 6.088" | 6.5" | Samsung Galaxy A51 5G has larger screen size than Xiaomi MI A3. |
Screen Resolution (Display Resolution) | 1560 x 720 pixels | 2400 x 1080 pixels | Samsung Galaxy A51 5G has better screen resolution than Xiaomi MI A3. |
Display Format | HD+ | Full HD+ | |
Aspect Ratio | 19.5:9 | - | |
Colour Depth | - | 16.7 million colours | |
Contrast Ratio | 60000:1 | - | |
Display Features | 2.5D Glass, Dot Drop display | Edge-to-Edge screen | |
Display Protection (Screen Protector) | Corning Gorilla Glass 5 (scratch resistant glass) | - |
PROCESSOR | Xiaomi MI A3 | Samsung Galaxy A51 5G |
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Processor Type (CPU) | Qualcomm Snapdragon 665 | - | |
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Clock Speed | 2 GHz | 2.2 GHz | Samsung Galaxy A51 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. |
64-bit Architecture | - | Yes | Samsung Galaxy A51 5G has 64-bit architecture. |
Graphics System (GPU) | Qualcomm ADRENO 610 | - |
MEMORY | Xiaomi MI A3 | Samsung Galaxy A51 5G |
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RAM | LPDDR4X SDRAM - 4 GB | 6 GB | Samsung Galaxy A51 5G has more RAM than Xiaomi MI A3. |
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Internal Memory Size (Storage Capacity) | 64 GB | 128 GB | Samsung Galaxy A51 5G has more internal memory than Xiaomi MI A3. |
User Memory | - | 105.3 GB | |
Supported Flash Memory Cards (Expandable Memory) | Up to 256 GB | microSDHC, microSDXC - up to 1 TB |
CAMERA | Xiaomi MI A3 | Samsung Galaxy A51 5G |
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MAIN CAMERA |
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Number of Main Cameras | 3 | 4 | |
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Sensor Resolution | 48 Megapixel | 48 Megapixel | Both phones have the same camera resolution. |
Sensor Size | 1/2" | - | |
Lens Aperture | F/1.79 | F/2.0 | Xiaomi MI A3 has better lens aperture than Xiaomi MI A3. |
Lens Construction | 6-element | - | |
Pixel Size | 1.6 μm | - | |
Focus Adjustment | Automatic | Automatic | |
Digital Zoom | - | 8x | |
Special Effects | - | Bokeh effect | |
Camera Modes | AI portrait mode | Slow motion video | |
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 30 fps, Slo-mo video 1280 x 720 (720p) at 480 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 | Live Focus, background blur |
SECOND CAMERA |
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Sensor Resolution (2nd Camera) | 8 Megapixel | 12 Megapixel | Samsung Galaxy A51 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 A51 5G has larger second camera lens field of view than Xiaomi MI A3. |
THIRD CAMERA |
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Sensor Resolution (3rd Camera) | 2 Megapixel | 5 Megapixel | Samsung Galaxy A51 5G has higher resolution third camera than Xiaomi MI A3. |
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Lens Aperture (3rd Camera) | - | F/2.4 | |
Camera Functions (3rd Camera) | Depth camera | Macro camera |
FOURTH CAMERA |
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Sensor Resolution (4th Camera) | - | 5 Megapixel | |
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Lens Aperture (4th Camera) | - | F/2.2 | |
Camera Functions (4th Camera) | - | Depth camera |
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) | - | |
Pixel Size (Front) | 1.6 μm | - | |
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 A51 5G |
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Battery Capacity (Battery Size) | 4030 mAh | 4500 mAh | Samsung Galaxy A51 5G has larger battery capacity than Xiaomi MI A3. |
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Fast Charging Technology | Qualcomm Quick Charge 3.0 | - | Xiaomi MI A3 has fast charging technology. |
Talk Time | - | 1380 minutes | |
Run Time Details | - | Talk (4G): up to 1380 min Active online usage (LTE): up to 16 hrs Active online usage (Wi-Fi): up to 17 hrs Playback (video): up to 19 hrs Playback (audio): up to 86 hrs |
CELLULAR | Xiaomi MI A3 | Samsung Galaxy A51 5G |
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Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
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Mobile Broadband Generation | 4G | 5G | Samsung Galaxy A51 5G has more advanced generation mobile network. |
Intelligent Assistant | Google Assistant | Bixby | |
Navigation | GPS, A-GPS, GLONASS, BeiDou | GPS, GLONASS, BeiDou, Galileo |
COMMUNICATIONS | Xiaomi MI A3 | Samsung Galaxy A51 5G |
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Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE | GPRS, EDGE, HSDPA, HSUPA, HSPA+, 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 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 3, Band 4, Band 5, Band 7, Band 8, Band 12, 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 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 700a, FDD 800 DD, FDD 700 APT, TDD 2600, TDD 2300, TDD 2500 | |
5G NR Band | - | N41, n78 | |
5G NR Frequency | - | TDD TD 2500, TDD TD 3500 | |
Wireless Interface | Infrared (IrDA), IEEE 802.11a/b/g/n/ac | IEEE 802.11a/b/g/n/ac, ANT+ | |
Bluetooth | Bluetooth 5.0 | Bluetooth 5.0 | |
NFC | - | Yes | Samsung Galaxy A51 5G has NFC reader for mobile payments. |
Messaging Services | SMS, MMS | SMS, MMS |
MEDIA | Xiaomi MI A3 | Samsung Galaxy A51 5G |
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Supported Digital Audio Standards | WAV, AAC, PCM, MP3, FLAC, AAC +, eAAC+, AMR-WB, AMR-NB | WAV, WMA, AAC, AMR, MP3, FLAC, XMF, OGG, MIDI, M4A, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, MID | |
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Supported Digital Video Standards | MKV, XviD, H.264, M4V, MPEG4-ASP, MPEG-4 SP, MP4 | MKV, FLV, AVI, WMV, ASF, 3GP, M4V, WebM, 3G2, MP4 |
FEATURES | Xiaomi MI A3 | Samsung Galaxy A51 5G |
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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 | |
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Sensors | Accelerometer, ambient light sensor, proximity sensor, digital compass, gyro sensor, vibration sensor | Accelerometer, ambient light sensor, gyro sensor, hall sensor, geomagnetic sensor | |
Security Devices | Fingerprint reader (under display) | Fingerprint reader (under display) | |
Additional Phone Features | AI face unlock | Fast Charging, Samsung KNOX, Bixby Vision, Bixby Routines, Virtual Proximity Sensing |
OTHERS | Xiaomi MI A3 | Samsung Galaxy A51 5G |
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Included Accessories | Power adapter, SIM card removal tool, USB-C cable, soft case | Power adapter |
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