Samsung Galaxy J7 Duo vs. Motorola Moto G31

Phone Comparison, Reviews and Tests

In depth comparison and review of Samsung Galaxy J7 Duo and Motorola Moto G31. 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. Motorola Moto G31 Comparison Chart
DESIGN AND DIMENSIONS Samsung Galaxy J7 Duo Motorola Moto G31
Product Type Smartphone Smartphone
Manufacturer Model Number SM-J720F -
Form Factor Touch Touch
Height 153.5 mm 161.89 mm Motorola Moto G31 has greater height than Samsung Galaxy J7 Duo.
Width 77.2 mm 73.87 mm Samsung Galaxy J7 Duo has greater width than Motorola Moto G31.
Depth 8.2 mm 8.55 mm Samsung Galaxy J7 Duo is narrower than Samsung Galaxy J7 Duo.
Weight 174 g 181 g Samsung Galaxy J7 Duo is lighter than Samsung Galaxy J7 Duo.
Body Colour Black Mineral grey | Baby blue
Body Material - Plastic
Waterproof (Water-resistant) - -
SAR Value 1.397 W/kg (body), 0.543 W/kg (head) 1.46 W/kg (body), 0.67 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
SIM Card Configuration Details - Nano SIM + nano SIM/microSD
DISPLAY Samsung Galaxy J7 Duo Motorola Moto G31
Display Type OLED display OLED display
Display Technology HD Super AMOLED OLED
Screen Size (Display Size) 5.5" 6.4" Motorola Moto G31 has larger screen size than Samsung Galaxy J7 Duo.
Screen Resolution (Display Resolution) 1280 x 720 pixels 2400 x 1080 pixels Motorola Moto G31 has better screen resolution than Samsung Galaxy J7 Duo.
Display Format HD Full HD+
Pixel Density - 409 ppi
Aspect Ratio - 20:9
Colour Depth 16.7 million colours -
Display Refresh Rate - 60 Hz
Display Features - Max Vision display
PROCESSOR Samsung Galaxy J7 Duo Motorola Moto G31
Processor Type (CPU) - MediaTek Helio G85
Clock Speed 1.6 GHz 2 GHz Motorola Moto G31 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) - ARM Mali-G52 MC2
MEMORY Samsung Galaxy J7 Duo Motorola Moto G31
RAM 3 GB 4 GB Motorola Moto G31 has more RAM than Samsung Galaxy J7 Duo.
Internal Memory Size (Storage Capacity) 32 GB 64 GB Motorola Moto G31 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 microSDHC, microSD, microSDXC - up to 1 TB
CAMERA Samsung Galaxy J7 Duo Motorola Moto G31
MAIN CAMERA
Number of Main Cameras 2 4
Sensor Resolution 13 Megapixel 50 Megapixel Motorola Moto G31 has better camera resolution than Samsung Galaxy J7 Duo.
Lens Aperture F/1.9 F/1.8 Motorola Moto G31 has better lens aperture than Samsung Galaxy J7 Duo.
Pixel Size - 1.28 μm
Focus Adjustment Automatic Automatic
Self-Timer Delay - Yes
Special Effects - HDR, Spot Colour
Camera Modes - Panorama, Pro mode, Timer mode, BurstShot, Watermark mode, Active photos, Cinemagraph, Portrait, Night Vision, AR stickers, Levelling, Macro Vision, Long exposure mode, Live filter, Capture Dual
Face Recognition (Face ID) - Auto smile capture Motorola Moto G31 has face detection.
Light Source LED flash LED flash
Video Resolutions 1920 x 1080 (1080p) at 30 fps 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps
Camera Features (Functions) - Phase Detect Auto-Focus (PDAF), Barcode Scanner, Cutout, Quad Pixel technology, smart composition, RAW photo output, shot optimisation, Google Lens, High-res digital zoom (up to 8x), Assistive Grid
SECOND CAMERA
Sensor Resolution (2nd Camera) 5 Megapixel 8 Megapixel Motorola Moto G31 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)
Pixel Size (2nd Camera) - 1.12 μm
Camera Functions (2nd Camera) - Depth camera
THIRD CAMERA
Sensor Resolution (3rd Camera) - 2 Megapixel
Lens Aperture (3rd Camera) - F/2.4
Pixel Size (3rd Camera) - 1.75 μm
Camera Functions (3rd Camera) - Macro camera
FOURTH CAMERA
Lens Aperture (4th Camera) - F/2.4
Pixel Size (4th Camera) - 1.75 μm
Camera Functions (4th Camera) - Depth camera
FRONT CAMERA
Number of Front Cameras 1 1
Sensor Resolution (Front) 8 Megapixel 13 Megapixel Motorola Moto G31 has better front camera resolution than Samsung Galaxy J7 Duo.
Lens Aperture (Front) F/1.9 F/2.2 Samsung Galaxy J7 Duo has better front lens aperture than Samsung Galaxy J7 Duo.
Pixel Size (Front) - 1.12 μm
Special Effects (Front) - HDR, Spot Colour
Camera Modes (Front) - Slow motion video, Pro mode, Timer mode, BurstShot, HYPERLAPSE, Watermark mode, portrait mode, Face Beauty, Timelapse video, Active photos, Cinemagraph, Portrait, Night Vision, Levelling, Gesture selfie, Group selfie, Long exposure mode, Live filter, Low Light AI Selfie, Capture Dual, Gesture Capture
Face Recognition (Face ID) - Auto smile capture Motorola Moto G31 has face detection.
Video Resolutions (Front) - 1920 x 1080 (1080p) at 30 fps
Camera Features (Front) - Video image stabilisation, RAW photo, Shot optimisation, Selfie animation, Assistive grid
BATTERY AND CHARGING Samsung Galaxy J7 Duo Motorola Moto G31
Battery Capacity (Battery Size) 3000 mAh 5000 mAh Motorola Moto G31 has larger battery capacity than Samsung Galaxy J7 Duo.
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
Standard usage: up to 36 hrs
CELLULAR Samsung Galaxy J7 Duo Motorola Moto G31
Technology WCDMA (UMTS) / GSM WCDMA (UMTS) / GSM
Mobile Broadband Generation 4G 4G Both phones have the same mobile network generation.
Operating System Google Android Android 11
Intelligent Assistant Bixby Google Assistant
Navigation GPS, GLONASS, BeiDou GPS, A-GPS, GLONASS, Galileo
COMMUNICATIONS Samsung Galaxy J7 Duo Motorola Moto G31
Data Transmission GPRS, EDGE, HSDPA, HSUPA, HSPA+, LTE LTE
2G Band 850 GSM, 900 GSM, 1800 GSM, 1900 GSM -
3G UMTS Band Band 1, Band 2, Band 5, Band 8 -
3G UMTS Frequency 2100, 1900, 850, 900 -
4G LTE Band Band 1, Band 3, Band 5, Band 7, Band 8, Band 20, Band 38, Band 40, Band 41 -
4G LTE Frequency FDD 2100, FDD 1800+, FDD 850, FDD 2600, FDD 900, FDD 800 DD, TDD 2600, TDD 2300, TDD 2500 -
Wireless Interface IEEE 802.11a/b/g/n/ac, ANT+/ANT IEEE 802.11a/b/g/n/ac
Bluetooth Bluetooth 5.0 Bluetooth 5.0
NFC - Yes Motorola Moto G31 has NFC reader for mobile payments.
Messaging Services SMS, MMS -
MEDIA Samsung Galaxy J7 Duo Motorola Moto G31
Supported Digital Audio Standards WAV, WMA, AAC, AMR, MP3, FLAC, XMF, OGG, MIDI, M4A, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, MID Dolby Atmos
Supported Digital Video Standards MKV, FLV, AVI, MPEG-4, WMV, ASF, 3GP, M4V, WebM, 3G2 -
FEATURES Samsung Galaxy J7 Duo Motorola Moto G31
Phone Functions 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, SAR sensor, gyroscope
Security Devices Face recognition, fingerprint reader Face recognition, fingerprint reader
Security Technology - Face Unlock
Additional Phone Features - Dual microphones
OTHERS Samsung Galaxy J7 Duo Motorola Moto G31
Included Accessories Power adapter Protective cover, USB cable, SIM card removal tool, 10W charger
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