Samsung Galaxy J7 Duo vs. Xiaomi MI A3

Phone Comparison, Reviews and Tests

In depth comparison and review of Samsung Galaxy J7 Duo and Xiaomi MI A3. 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.

Phone Specifications Comparison

Samsung Galaxy J7 Duo vs. Xiaomi MI A3 Comparison Chart
DESIGN AND DIMENSIONS Samsung Galaxy J7 Duo Xiaomi MI A3
Product Type Smartphone Smartphone
Manufacturer Model Number SM-J720F -
Form Factor Touch Touch
Height 153.5 mm 153.48 mm Samsung Galaxy J7 Duo has greater height than Xiaomi MI A3.
Width 77.2 mm 71.85 mm Samsung Galaxy J7 Duo has greater width than Xiaomi MI A3.
Depth 8.2 mm 8.475 mm Samsung Galaxy J7 Duo is narrower than Samsung Galaxy J7 Duo.
Weight 174 g 173.8 g Xiaomi MI A3 is lighter than Samsung Galaxy J7 Duo.
Body Colour Black Kind of grey
Body Material - Corning Gorilla Glass 5
Waterproof (Water-resistant) - -
SAR Value 1.397 W/kg (body), 0.543 W/kg (head) 2.34 W/kg (limb), 1.097 W/kg (body), 0.301 W/kg (head)
Connector Type Micro-USB - 5 pin Micro-USB Type B
Headset jack - mini-phone 3.5mm
USB Type-C - 24 pin USB-C
Headset jack - mini-phone 3.5mm
SIM Card Type (Size) Micro SIM Nano SIM
SIM Card Qty Single-SIM Dual-SIM
DISPLAY Samsung Galaxy J7 Duo Xiaomi MI A3
Display Type OLED display OLED display
Display Technology HD Super AMOLED AMOLED
Screen Size (Display Size) 5.5" 6.088" Xiaomi MI A3 has larger screen size than Samsung Galaxy J7 Duo.
Screen Resolution (Display Resolution) 1280 x 720 pixels 1560 x 720 pixels Xiaomi MI A3 has better screen resolution than Samsung Galaxy J7 Duo.
Display Format HD HD+
Aspect Ratio - 19.5:9
Colour Depth 16.7 million colours -
Contrast Ratio - 60000:1
Display Features - 2.5D Glass, Dot Drop display
Display Protection (Screen Protector) - Corning Gorilla Glass 5 (scratch resistant glass)
PROCESSOR Samsung Galaxy J7 Duo Xiaomi MI A3
Processor Type (CPU) - Qualcomm Snapdragon 665
Clock Speed 1.6 GHz 2 GHz Xiaomi MI A3 has higher clock speed than Samsung Galaxy J7 Duo.
Processor Core Qty 8-core 8-core Both phones have the same number of phone cores.
Graphics System (GPU) - Qualcomm ADRENO 610
MEMORY Samsung Galaxy J7 Duo Xiaomi MI A3
RAM 3 GB LPDDR4X SDRAM - 4 GB Xiaomi MI A3 has more RAM than Samsung Galaxy J7 Duo.
Internal Memory Size (Storage Capacity) 32 GB 64 GB Xiaomi MI A3 has more internal memory than Samsung Galaxy J7 Duo.
User Memory 21.9 GB -
Supported Flash Memory Cards (Expandable Memory) microSDHC, microSDXC - up to 256 GB Up to 256 GB
CAMERA Samsung Galaxy J7 Duo Xiaomi MI A3
MAIN CAMERA
Number of Main Cameras 2 3
Sensor Resolution 13 Megapixel 48 Megapixel Xiaomi MI A3 has better camera resolution than Samsung Galaxy J7 Duo.
Sensor Size - 1/2"
Lens Aperture F/1.9 F/1.79 Xiaomi MI A3 has better lens aperture than Samsung Galaxy J7 Duo.
Lens Construction - 6-element
Pixel Size - 1.6 μm
Focus Adjustment Automatic Automatic
Camera Modes - AI portrait mode
Light Source LED flash Flash
Video Resolutions 1920 x 1080 (1080p) at 30 fps 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
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
SECOND CAMERA
Sensor Resolution (2nd Camera) 5 Megapixel 8 Megapixel Xiaomi MI A3 has better second camera resolution than Samsung Galaxy J7 Duo.
Lens Type (2nd Camera) - Ultra wide-angle lens
Lens Aperture (2nd Camera) F/1.9 F/2.2 Samsung Galaxy J7 Duo has better second camera lens aperture than Samsung Galaxy J7 Duo.
Field of View (2nd Camera) - 118 degree(s)
THIRD CAMERA
Sensor Resolution (3rd Camera) - 2 Megapixel
Camera Functions (3rd Camera) - Depth camera
FRONT CAMERA
Number of Front Cameras 1 1
Sensor Resolution (Front) 8 Megapixel 32 Megapixel Xiaomi MI A3 has better front camera resolution than Samsung Galaxy J7 Duo.
Lens Aperture (Front) F/1.9 F/2.0 Samsung Galaxy J7 Duo has better front lens aperture than Samsung Galaxy J7 Duo.
Lens Element Qty (Front) - 5-element
Field of View (Front) - 79 degree(s)
Pixel Size (Front) - 1.6 μm
Focus Adjustment - 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 Samsung Galaxy J7 Duo Xiaomi MI A3
Battery Capacity (Battery Size) 3000 mAh 4030 mAh Xiaomi MI A3 has larger battery capacity than Samsung Galaxy J7 Duo.
Fast Charging Technology - Qualcomm Quick Charge 3.0 Xiaomi MI A3 has fast charging technology.
Talk Time 1200 minutes -
Run Time Details Active online usage (WCDMA): up to 11 hrs
Active online usage (LTE): up to 13 hrs
Active online usage (Wi-Fi): up to 13 hrs
Playback (video): up to 17 hrs
Playback (audio): up to 66 hrs
Talk (WCDMA): up to 1200 min
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CELLULAR Samsung Galaxy J7 Duo Xiaomi MI A3
Technology WCDMA (UMTS) / GSM WCDMA (UMTS) / GSM
Mobile Broadband Generation 4G 4G Both phones have the same mobile network generation.
Operating System Google Android -
Intelligent Assistant Bixby Google Assistant
Navigation GPS, GLONASS, BeiDou GPS, A-GPS, GLONASS, BeiDou
COMMUNICATIONS Samsung Galaxy J7 Duo Xiaomi MI A3
Data Transmission GPRS, EDGE, HSDPA, HSUPA, HSPA+, 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 5, Band 8 Band 1, Band 2, Band 4, Band 5, Band 8
3G UMTS Frequency 2100, 1900, 850, 900 2100, 1900, 1700, 850, 900
4G LTE Band Band 1, Band 3, Band 5, Band 7, Band 8, Band 20, Band 38, Band 40, Band 41 Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 20, Band 28, Band 38, Band 40
4G LTE Frequency FDD 2100, FDD 1800+, FDD 850, FDD 2600, FDD 900, FDD 800 DD, TDD 2600, TDD 2300, TDD 2500 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
Wireless Interface IEEE 802.11a/b/g/n/ac, ANT+/ANT Infrared (IrDA), IEEE 802.11a/b/g/n/ac
Bluetooth Bluetooth 5.0 Bluetooth 5.0
Messaging Services SMS, MMS SMS, MMS
MEDIA Samsung Galaxy J7 Duo Xiaomi MI A3
Supported Digital Audio Standards WAV, WMA, AAC, AMR, MP3, FLAC, XMF, OGG, MIDI, M4A, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, MID WAV, AAC, PCM, MP3, FLAC, AAC +, eAAC+, AMR-WB, AMR-NB
Supported Digital Video Standards MKV, FLV, AVI, MPEG-4, WMV, ASF, 3GP, M4V, WebM, 3G2 MKV, XviD, H.264, M4V, MPEG4-ASP, MPEG-4 SP, MP4
FEATURES Samsung Galaxy J7 Duo Xiaomi MI A3
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, proximity sensor Accelerometer, ambient light sensor, proximity sensor, digital compass, gyro sensor, vibration sensor
Security Devices Face recognition, fingerprint reader Fingerprint reader (under display)
Additional Phone Features - AI face unlock
OTHERS Samsung Galaxy J7 Duo Xiaomi MI A3
Included Accessories Power adapter Power adapter, SIM card removal tool, USB-C cable, soft case
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