In depth comparison and review of Samsung Galaxy J3 (2017) DUOS and Samsung Galaxy S21 Ultra 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 | Samsung Galaxy J3 (2017) DUOS | Samsung Galaxy S21 Ultra 5G |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | SM-J330F | SM-G998B/DS | |
| Form Factor | Touch | Touch | |
| Height | 143.2 mm | 161.5 mm | Samsung Galaxy S21 Ultra 5G has greater height than Samsung Galaxy J3 (2017) DUOS. |
| Width | 70.3 mm | 75.6 mm | Samsung Galaxy S21 Ultra 5G has greater width than Samsung Galaxy J3 (2017) DUOS. |
| Depth | 8.2 mm | 8.9 mm | Samsung Galaxy J3 (2017) DUOS is narrower than Samsung Galaxy J3 (2017) DUOS. |
| Weight | 142 g | 227 g | Samsung Galaxy J3 (2017) DUOS is lighter than Samsung Galaxy J3 (2017) DUOS. |
| Body Colour | Black | Blue | Phantom silver | Phantom black | Phantom navy | Phantom brown | Phantom titanium | |
| Body Material | Metal | - | |
| Protection | - | Dustproof, splashproof, water-resistant | |
| Waterproof (Water-resistant) | - | Yes | Samsung Galaxy S21 Ultra 5G is waterproof. |
| IP rating | - | IP68 | |
| SAR Value | 1.32 W/kg (body), 0.658 W/kg (head) | 1.58 W/kg (body), 0.714 W/kg (head), 2.56 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) | Nano SIM | Nano SIM, Electronic SIM card (e-SIM) | |
| SIM Card Qty | Dual-SIM | Dual-SIM |
| DISPLAY | Samsung Galaxy J3 (2017) DUOS | Samsung Galaxy S21 Ultra 5G |
|---|
| Display Type | LCD display | OLED display | |
|---|---|---|---|
| Display Technology | PLS | Infinity-O Dynamic AMOLED 2X | |
| Screen Size (Display Size) | 5" | 6.8" | Samsung Galaxy S21 Ultra 5G has larger screen size than Samsung Galaxy J3 (2017) DUOS. |
| Screen Resolution (Display Resolution) | 1280 x 720 pixels | 3200 x 1440 pixels | Samsung Galaxy S21 Ultra 5G has better screen resolution than Samsung Galaxy J3 (2017) DUOS. |
| Display Format | HD | QHD+ | |
| Pixel Density | - | 515 ppi | |
| Colour Depth | 16.7 million colours | 16.7 million colours | Both phones have the same color depth. |
| HDR | - | Yes | Samsung Galaxy S21 Ultra 5G has HDR. |
| HDR Technology | - | HDR10+ | |
| Display Enhancement Technology | - | Eye Comfort Shield | |
| Display Refresh Rate | - | 120 Hz | |
| Display Features | - | Edge Screen, AOD(Always On Display) | |
| Display Protection (Screen Protector) | - | Corning Gorilla Glass Victus (scratch resistant glass) |
| PROCESSOR | Samsung Galaxy J3 (2017) DUOS | Samsung Galaxy S21 Ultra 5G |
|---|
| Processor Type (CPU) | - | Samsung Exynos 2100 | |
|---|---|---|---|
| Clock Speed | 1.4 GHz | 2.9 GHz | Samsung Galaxy S21 Ultra 5G has higher clock speed than Samsung Galaxy J3 (2017) DUOS. |
| Processor Core Qty | Quad-core | 8-core | Samsung Galaxy S21 Ultra 5G has higher processor core quantity than Samsung Galaxy J3 (2017) DUOS. |
| Graphics System (GPU) | - | Mali-G78 MP14 |
| MEMORY | Samsung Galaxy J3 (2017) DUOS | Samsung Galaxy S21 Ultra 5G |
|---|
| RAM | 2 GB | LPDDR5 SDRAM - 12 GB | Samsung Galaxy S21 Ultra 5G has more RAM than Samsung Galaxy J3 (2017) DUOS. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 16 GB | 128 GB | Samsung Galaxy S21 Ultra 5G has more internal memory than Samsung Galaxy J3 (2017) DUOS. |
| User Memory | 10.3 GB | 101.7 GB | |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 256 GB | - |
| CAMERA | Samsung Galaxy J3 (2017) DUOS | Samsung Galaxy S21 Ultra 5G |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 1 | 4 | |
|---|---|---|---|
| Sensor Resolution | 13 Megapixel | 12 Megapixel | Samsung Galaxy J3 (2017) DUOS has better camera resolution than Samsung Galaxy S21 Ultra 5G. |
| Lens Type | - | Ultra wide-angle lens | |
| Lens Aperture | F/1.9 | F/2.2 | Samsung Galaxy J3 (2017) DUOS has better lens aperture than Samsung Galaxy J3 (2017) DUOS. |
| Field of View (FoV) | - | 120 degree(s) | |
| Pixel Size | - | 1.4 μm | |
| Optical Image Stabiliser (OIS) | - | Optical Image Stabiliser (OIS) | Samsung Galaxy S21 Ultra 5G has optical stabilisation. |
| Focus Adjustment | Automatic | Automatic | |
| Laser Auto Focus | - | Yes | |
| Optical Zoom | - | 3x | |
| Digital Zoom | - | 100x | |
| Self-Timer Delay | - | Yes | |
| Special Effects | HDR | Face retouch, Grid Line | |
| HDR Mode | - | Auto HDR mode | |
| Camera Modes | Panorama, Pro mode, night mode | Panorama, Slow motion mode, Pro mode, HYPERLAPSE, Super Slow-mo, Flowers, Greenery, Trees, Sky, Beaches, Watersides, Snow, Backlit, Text, Food, Face, Baby, Person, Dog, Cat, People, Sunset, Sunrise, City, Waterfall, Scenery, Stage, Vehicles, Drinks, Animal, Shoes, Indoor, Clothes, Night view, Night, Motion Photo, Mountain, Single Take, Pro Video, Director's View | |
| Light Source | LED light | High CRI 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, 3840 x 2160 (4K) at 60 fps, Super slow motion video 1280 x 720 (720p) at 960 fps, Slo-mo video 1920 x 1080 (1080p) at 240 fps, 7680 x 4320 (UHD 8K) at 24fps, Hyperlapse 4K video support at 30 fps, Super Steady 1080p video support at 60 fps | |
| Camera Features (Functions) | - | Playback zoom, blink detection, VDIS (Video Digital Image Stabilisation), Tracking AF, Video location tags, Scene Optimiser, Flaw detection, Shot suggestions, blur detection, HDR10+ recording, Super steady, Quick Measure, Zoom-In Mic, Space Zoom, Take 33MP still photos while playing 8K video, Hybrid Optic Zoom 3x, Super Resolution Zoom up to 30x, Digital zoom up to 12x for video |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | - | 108 Megapixel | |
|---|---|---|---|
| Sensor Size (2nd Camera) | - | 1/1.33" | |
| Lens Type (2nd Camera) | - | Wide-angle lens | |
| Lens Aperture (2nd Camera) | - | F/1.8 | |
| Field of View (2nd Camera) | - | 83 degree(s) | |
| Pixel Size (2nd Camera) | - | 0.8 μm | |
| Camera Features (2nd Camera) | - | Phase Detect Auto-Focus (PDAF), OIS (Optical Image Stabilisation) |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | - | 10 Megapixel | |
|---|---|---|---|
| Lens Type (3rd Camera) | - | Telephoto lens | |
| Lens Aperture (3rd Camera) | - | F/2.4 | |
| Field of View (3rd Camera) | - | 35 degree(s) | |
| Pixel Size (3rd Camera) | - | 1.22 μm | |
| Camera Features (3rd Camera) | - | Dual Pixel AF |
| FOURTH CAMERA |
|---|
| Sensor Resolution (4th Camera) | - | 10 Megapixel | |
|---|---|---|---|
| Lens Type (4th Camera) | - | Telephoto lens | |
| Lens Aperture (4th Camera) | - | F/4.9 | |
| Field of View (4th Camera) | - | 10 degree(s) | |
| Pixel Size (4th Camera) | - | 1.22 μm | |
| Camera Features (4th Camera) | - | Dual Pixel AF |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 5 Megapixel | 40 Megapixels | Samsung Galaxy S21 Ultra 5G has better front camera resolution than Samsung Galaxy J3 (2017) DUOS. |
| Lens Aperture (Front) | F/2.2 | F/2.2 | Both phones have the same front camera lens aperture. |
| Field of View (Front) | - | 80 degree(s) | |
| Pixel Size (Front) | - | 0.7 μm | |
| Focus Adjustment | - | Automatic | |
| Special Effects (Front) | HDR | - | |
| Camera Features (Front) | - | Phase Detect Auto-Focus (PDAF) |
| BATTERY AND CHARGING | Samsung Galaxy J3 (2017) DUOS | Samsung Galaxy S21 Ultra 5G |
|---|
| Battery Capacity (Battery Size) | 2400 mAh | 5000 mAh | Samsung Galaxy S21 Ultra 5G has larger battery capacity than Samsung Galaxy J3 (2017) DUOS. |
|---|---|---|---|
| Fast Charging Technology | - | Qualcomm Quick Charge 2.0, Adaptive Fast Charging, Samsung Super Fast Charging, Power Delivery 3.0 | Samsung Galaxy S21 Ultra 5G has fast charging technology. |
| Wireless Charging | - | Yes | Samsung Galaxy S21 Ultra 5G can be charged wirelessly. |
| Wireless Charging Standards | - | WPC, Qi, Fast Wireless Charging 2.0, Wireless PowerShare | |
| Talk Time | 900 minutes | 2460 minutes | Samsung Galaxy S21 Ultra 5G has longer battery life when making calls than Samsung Galaxy J3 (2017) DUOS. |
| Run Time Details | Playback (Music): up to 61 hrs Continuous browsing (3G): up to 12 hrs Playback (video): up to 14 hrs Continuous browsing (4G): up to 14 hrs Talk (3G): up to 900 min Continuous browsing (Wi-Fi): up to 14 hrs |
Talk (4G): up to 2460 min Active online usage (LTE): up to 18 hrs Active online usage (Wi-Fi): up to 18 hrs Playback (wireless video): up to 22 hrs Playback (wireless audio): up to 81 hrs |
| CELLULAR | Samsung Galaxy J3 (2017) DUOS | Samsung Galaxy S21 Ultra 5G |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 5G | Samsung Galaxy S21 Ultra 5G has more advanced generation mobile network. |
| Operating System | Android 7.0 Nougat | Android 11 | |
| Intelligent Assistant | - | Bixby | |
| Payment Technology | - | Samsung Pay | |
| Navigation | GPS, GLONASS, BeiDou | GPS, GLONASS, BeiDou, Galileo |
| COMMUNICATIONS | Samsung Galaxy J3 (2017) DUOS | Samsung Galaxy S21 Ultra 5G |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, LTE, FDD-LTE, TDD-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 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 17, Band 20, Band 38, Band 40 | Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 12, Band 13, Band 17, Band 18, Band 19, Band 20, Band 25, Band 26, Band 28, Band 32, Band 38, Band 39, 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 700b, FDD 800 DD, TDD 2600, TDD 2300 | FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 700a, FDD 700c, FDD 700b, FDD 800 lower, FDD 800 upper, FDD 800 DD, FDD 1900+, FDD 850+, FDD 700 APT, FDD 1500 L, TDD 2600, TDD 1900, TDD 2300, TDD 2500, FDD 1700 - 2110 AWS-3 | |
| 5G NR Band | - | N1, n3, n5, n7, n8, n20, n28, n38, n41, n66, n77, 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 3700, TDD TD 3500, TDD 2300 | |
| Wireless Interface | IEEE 802.11b/g/n | IEEE 802.11a/b/g/n/ac/ax | |
| Bluetooth | Bluetooth 4.2 | Bluetooth 5.2 | |
| Bluetooth Profiles | HFP, HSP, OPP, PAN, A2DP, AVRCP, HID, PBAP, MAP, DIP, HOGP | - | |
| NFC | - | Yes | Samsung Galaxy S21 Ultra 5G has NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | - |
| MEDIA | Samsung Galaxy J3 (2017) DUOS | Samsung Galaxy S21 Ultra 5G |
|---|
| Supported Digital Audio Standards | WMA, MP3, FLAC, OGG, MP4 | WAV, WMA, AAC, PCM, AMR, MP3, FLAC, XMF, OGG, MIDI, APE (Monkey's Audio), M4A, DSF, DSD, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, DFF, MID, DSD64, DSD128 | |
|---|---|---|---|
| Supported Digital Video Standards | VC-1, MPEG-4, H.264, H.263, MP43, VP8, VP9, H.265, WMV7 | MKV, FLV, AVI, WMV, ASF, 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 J3 (2017) DUOS | Samsung Galaxy S21 Ultra 5G |
|---|
| Phone Functions | Speakerphone, call timer, conference call, flight mode, 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, barometer, gyro sensor, hall sensor, geomagnetic sensor | |
| Security Devices | - | Fingerprint reader (under display), face recognition | |
| Additional Phone Features | Dual Messenger | Air View, MIMO technology, Smart Select, Samsung KNOX, Smart View, Live message, Screen off memo, Bixby Vision, Dual Audio, Bixby Routines, Intelligent Performance Enhancer, AR Doodle, PENUP, Bixby key, Samsung Knox Vault, Private Share function, Enhanced Game Booster, Air Command |
| OTHERS | Samsung Galaxy J3 (2017) DUOS | Samsung Galaxy S21 Ultra 5G |
|---|
| Included Accessories | Power adapter | SIM card removal tool, USB-C to USB-C cable | |
|---|---|---|---|
| Compliant Standards | - | IP68, HAC (Hearing Aid Compatible) | |
| Max Depth of Water Resistance | - | 1.5 m |
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