Samsung Galaxy J7 Duo vs. Samsung Galaxy S21 FE 5G

Phone Comparison, Reviews and Tests

Side by side comparison and review of Samsung Galaxy J7 Duo and Samsung Galaxy S21 FE 5G. Compare sizes, cameras, batteries, memory capacities and other key specifications and features to simplify the choice of your perfect phone. Our goal is to make it easier for you to decide on the phone that will best meet your expectations by revealing the main differences between the products.

Phone Specifications Comparison

Samsung Galaxy J7 Duo vs. Samsung Galaxy S21 FE 5G Comparison Chart
DESIGN AND DIMENSIONS Samsung Galaxy J7 Duo Samsung Galaxy S21 FE 5G
Product Type Smartphone Smartphone
Manufacturer Model Number SM-J720F SM-G990B/DS
Form Factor Touch Touch
Height 153.5 mm 155.7 mm Samsung Galaxy S21 FE 5G has greater height than Samsung Galaxy J7 Duo.
Width 77.2 mm 74.5 mm Samsung Galaxy J7 Duo has greater width than Samsung Galaxy S21 FE 5G.
Depth 8.2 mm 7.9 mm Samsung Galaxy S21 FE 5G is narrower than Samsung Galaxy J7 Duo.
Weight 174 g 177 g Samsung Galaxy J7 Duo is lighter than Samsung Galaxy J7 Duo.
Body Colour Black Olive | Graphite | White | Lavender
Protection - Dustproof, splashproof, water-resistant
Waterproof (Water-resistant) - -
IP rating - IP68
SAR Value 1.397 W/kg (body), 0.543 W/kg (head) 1.48 W/kg (body), 0.952 W/kg (head), 2.91 W/kg (limb)
Connector Type Micro-USB - 5 pin Micro-USB Type B
Headset jack - mini-phone 3.5mm
USB Type-C - 24 pin USB-C
SIM Card Type (Size) Micro SIM Nano SIM
SIM Card Qty Single-SIM Dual-SIM
DISPLAY Samsung Galaxy J7 Duo Samsung Galaxy S21 FE 5G
Display Type OLED display OLED display
Display Technology HD Super AMOLED Infinity-O Dynamic AMOLED 2X
Screen Size (Display Size) 5.5" 6.4" Samsung Galaxy S21 FE 5G has larger screen size than Samsung Galaxy J7 Duo.
Screen Resolution (Display Resolution) 1280 x 720 pixels 2340 x 1080 pixels Samsung Galaxy S21 FE 5G has better screen resolution than Samsung Galaxy J7 Duo.
Display Format HD Full HD+
Pixel Density - 401 ppi
Colour Depth 16.7 million colours 16.7 million colours Both phones have the same color depth.
HDR Technology - HDR10+
Display Enhancement Technology - Eye Comfort Shield
Display Refresh Rate - 120 Hz
Display Features - AOD(Always On Display), Infinity O display, Video Wallpaper
Display Protection (Screen Protector) - Corning Gorilla Glass Victus (scratch resistant glass)
PROCESSOR Samsung Galaxy J7 Duo Samsung Galaxy S21 FE 5G
Clock Speed 1.6 GHz 2.84 GHz Samsung Galaxy S21 FE 5G 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.
MEMORY Samsung Galaxy J7 Duo Samsung Galaxy S21 FE 5G
RAM 3 GB 6 GB Samsung Galaxy S21 FE 5G has more RAM than Samsung Galaxy J7 Duo.
Internal Memory Size (Storage Capacity) 32 GB 128 GB Samsung Galaxy S21 FE 5G has more internal memory than Samsung Galaxy J7 Duo.
User Memory 21.9 GB 101.1 GB
Supported Flash Memory Cards (Expandable Memory) microSDHC, microSDXC - up to 256 GB -
CAMERA Samsung Galaxy J7 Duo Samsung Galaxy S21 FE 5G
MAIN CAMERA
Number of Main Cameras 2 3
Sensor Resolution 13 Megapixel 12 Megapixel Samsung Galaxy J7 Duo has better camera resolution than Samsung Galaxy S21 FE 5G.
Sensor Size - 1/1.76"
Lens Type - Wide-angle lens
Lens Aperture F/1.9 F/1.8 Samsung Galaxy S21 FE 5G has better lens aperture than Samsung Galaxy J7 Duo.
Field of View (FoV) - 79 degree(s)
Pixel Size - 1.8 μm
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 - Night mode, portrait mode
Light Source LED flash LED flash
Video Resolutions 1920 x 1080 (1080p) at 30 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) - Dual recording
SECOND CAMERA
Sensor Resolution (2nd Camera) 5 Megapixel 12 Megapixel Samsung Galaxy S21 FE 5G 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) - 123 degree(s)
Pixel Size (2nd Camera) - 1.12 μm
THIRD CAMERA
Sensor Resolution (3rd Camera) - 8 Megapixel
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 Features (3rd Camera) - Space Zoom x30
FRONT CAMERA
Number of Front Cameras 1 1
Sensor Resolution (Front) 8 Megapixel 32 Megapixel Samsung Galaxy S21 FE 5G 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.
Field of View (Front) - 81 degree(s)
Pixel Size (Front) - 0.8 μm
Focus Adjustment - Focus free
BATTERY AND CHARGING Samsung Galaxy J7 Duo Samsung Galaxy S21 FE 5G
Battery Capacity (Battery Size) 3000 mAh 4500 mAh Samsung Galaxy S21 FE 5G has larger battery capacity than Samsung Galaxy J7 Duo.
Fast Charging Technology - Samsung Fast Charging Samsung Galaxy S21 FE 5G has fast charging technology.
Wireless Charging - Yes Samsung Galaxy S21 FE 5G can be charged wirelessly.
Wireless Charging Standards - Wireless PowerShare
Talk Time 1200 minutes 2220 minutes Samsung Galaxy S21 FE 5G has longer battery life when making calls than Samsung Galaxy J7 Duo.
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
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 Samsung Galaxy J7 Duo Samsung Galaxy S21 FE 5G
Technology WCDMA (UMTS) / GSM WCDMA (UMTS) / GSM
Mobile Broadband Generation 4G 5G Samsung Galaxy S21 FE 5G has more advanced generation mobile network.
Operating System Google Android Android 12
Intelligent Assistant Bixby Bixby
Payment Technology - Samsung Pay
Navigation GPS, GLONASS, BeiDou GPS, GLONASS, BeiDou, Galileo, QZSS
COMMUNICATIONS Samsung Galaxy J7 Duo Samsung Galaxy S21 FE 5G
Data Transmission GPRS, EDGE, HSDPA, HSUPA, HSPA+, LTE FDD-LTE, TDD-LTE, 5G NR FR1
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 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 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 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 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 Samsung Galaxy S21 FE 5G has NFC reader for mobile payments.
Messaging Services SMS, MMS -
MEDIA Samsung Galaxy J7 Duo Samsung Galaxy S21 FE 5G
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, AMR, MP3, FLAC, XMF, OGG, MIDI, APE (Monkey's Audio), M4A, DSF, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, DFF, MID
Supported Digital Video Standards MKV, FLV, AVI, MPEG-4, WMV, ASF, 3GP, M4V, WebM, 3G2 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 Samsung Galaxy J7 Duo Samsung Galaxy S21 FE 5G
Phone Functions Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert -
Sensors Accelerometer, proximity sensor Accelerometer, proximity sensor, barometer, gyro sensor, hall sensor, geomagnetic sensor, light sensor
Security Devices Face recognition, fingerprint reader Fingerprint reader
Additional Phone Features - MIMO technology, Fast Charging, Samsung KNOX, Samsung DeX support, Samsung Smart Switch, Game mode
OTHERS Samsung Galaxy J7 Duo Samsung Galaxy S21 FE 5G
Included Accessories Power adapter SIM card removal tool, USB-C cable
Compliant Standards - IP68
Max Depth of Water Resistance - 1.5 m
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