Detailed comparison and review of Samsung Galaxy J7 Duo and Black Shark 2. With our comprehensive overview, you can simply compare sizes, functions, but also other key features of both phones and easily decide which one is the right choice for you. Our goal is to help you identify the main differences between products and find the phone that best fits your needs and expectations.
| DESIGN AND DIMENSIONS | Samsung Galaxy J7 Duo | Black Shark 2 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | SM-J720F | - | |
| Form Factor | Touch | Touch | |
| Height | 153.5 mm | 163.61 mm | Black Shark 2 has greater height than Samsung Galaxy J7 Duo. |
| Width | 77.2 mm | 75.01 mm | Samsung Galaxy J7 Duo has greater width than Black Shark 2. |
| Depth | 8.2 mm | 8.77 mm | Samsung Galaxy J7 Duo is narrower than Samsung Galaxy J7 Duo. |
| Weight | 174 g | 205 g | Samsung Galaxy J7 Duo is lighter than Samsung Galaxy J7 Duo. |
| Body Colour | Black | Shadow black | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | 1.397 W/kg (body), 0.543 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 | |
| SIM Card Type (Size) | Micro SIM | Nano SIM | |
| SIM Card Qty | Single-SIM | Dual-SIM |
| DISPLAY | Samsung Galaxy J7 Duo | Black Shark 2 |
|---|
| Display Type | OLED display | OLED display | |
|---|---|---|---|
| Display Technology | HD Super AMOLED | AMOLED | |
| Screen Size (Display Size) | 5.5" | 6.39" | Black Shark 2 has larger screen size than Samsung Galaxy J7 Duo. |
| Screen Resolution (Display Resolution) | 1280 x 720 pixels | 2340 x 1080 pixels | Black Shark 2 has better screen resolution than Samsung Galaxy J7 Duo. |
| Display Format | HD | - | |
| Pixel Density | - | 403 ppi | |
| Aspect Ratio | - | 19.5:9 | |
| Max Brightness | - | 430 cd/m² | |
| Colour Depth | 16.7 million colours | - | |
| Contrast Ratio | - | 60000:1 | |
| HDR | - | Yes | Black Shark 2 has HDR. |
| Display Refresh Rate | - | 240 Hz | |
| Display Features | - | Eye protection mode, Image Enhance Technology, DCI-P3 Wide colour gamut, TrueView Display, intelligent motion compensation technology |
| PROCESSOR | Samsung Galaxy J7 Duo | Black Shark 2 |
|---|
| Processor Type (CPU) | - | Qualcomm Snapdragon 855 | |
|---|---|---|---|
| Clock Speed | 1.6 GHz | 2.84 GHz | Black Shark 2 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. |
| 64-bit Architecture | - | Yes | Black Shark 2 has 64-bit architecture. |
| Graphics System (GPU) | - | Qualcomm ADRENO 640 |
| MEMORY | Samsung Galaxy J7 Duo | Black Shark 2 |
|---|
| RAM | 3 GB | LPDDR4X SDRAM - 12 GB | Black Shark 2 has more RAM than Samsung Galaxy J7 Duo. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 32 GB | 256 GB | Black Shark 2 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 | - |
| CAMERA | Samsung Galaxy J7 Duo | Black Shark 2 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 2 | 2 | |
|---|---|---|---|
| Sensor Resolution | 13 Megapixel | 48 Megapixel | Black Shark 2 has better camera resolution than Samsung Galaxy J7 Duo. |
| Lens Aperture | F/1.9 | F/1.75 | Black Shark 2 has better lens aperture than Samsung Galaxy J7 Duo. |
| Lens Construction | - | 6-element | |
| Pixel Size | - | 0.8 μm | |
| Focus Adjustment | Automatic | Automatic | |
| Optical Zoom | - | 2x | |
| Special Effects | - | HDR, low light enhancement | |
| Camera Modes | - | Panorama, Slow motion mode, Pro mode, portrait mode | |
| 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, 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 | |
| Camera Features (Functions) | - | Phase Detect Auto-Focus (PDAF) |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 5 Megapixel | 12 Megapixel | Black Shark 2 has better second camera resolution than Samsung Galaxy J7 Duo. |
|---|---|---|---|
| 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. |
| Pixel Size (2nd Camera) | - | 1 μm | |
| Camera Features (2nd Camera) | - | 6P lens |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 8 Megapixel | 20 Megapixel | Black Shark 2 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 | |
| Pixel Size (Front) | - | 0.9 μm | |
| Camera Modes (Front) | - | AI Beauty | |
| Camera Features (Front) | - | 4-in-1 technology |
| BATTERY AND CHARGING | Samsung Galaxy J7 Duo | Black Shark 2 |
|---|
| Battery Capacity (Battery Size) | 3000 mAh | 4000 mAh | Black Shark 2 has larger battery capacity than Samsung Galaxy J7 Duo. |
|---|---|---|---|
| Fast Charging Technology | - | Qualcomm Quick Charge 3.0, Qualcomm Quick Charge 4.0 | Black Shark 2 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 |
- |
| CELLULAR | Samsung Galaxy J7 Duo | Black Shark 2 |
|---|
| Technology | WCDMA (UMTS) / GSM | CDMA2000 1X / GSM / WCDMA (UMTS) / TD-SCDMA | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
| Operating System | Google Android | - | |
| Intelligent Assistant | Bixby | - | |
| Navigation | GPS, GLONASS, BeiDou | GPS, A-GPS, GLONASS, BeiDou |
| COMMUNICATIONS | Samsung Galaxy J7 Duo | Black Shark 2 |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, LTE | GPRS, EDGE, EV-DO, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE | |
|---|---|---|---|
| 2G Band | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | - | |
| 3G UMTS Band | Band 1, Band 2, Band 5, Band 8 | Band 1, Band 2, Band 5, Band 8 | |
| 3G UMTS Frequency | 2100, 1900, 850, 900 | 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 | Band 1, Band 3, Band 4, Band 5, Band 7, Band 8, Band 20, Band 28, Band 34, Band 38, Band 39, 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 | FDD 2100, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 800 DD, FDD 700 APT, TDD 2000, TDD 2600, TDD 1900, 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 | |
| Messaging Services | SMS, MMS | SMS, MMS |
| MEDIA | Samsung Galaxy J7 Duo | Black Shark 2 |
|---|
| Supported Digital Audio Standards | WAV, WMA, AAC, AMR, MP3, FLAC, XMF, OGG, MIDI, M4A, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, MID | WAV, WMA, AAC, AIFF, AMR, MP3, FLAC, OGG, APE (Monkey's Audio), apt-X, apt-X HD | |
|---|---|---|---|
| Supported Digital Video Standards | MKV, FLV, AVI, MPEG-4, WMV, ASF, 3GP, M4V, WebM, 3G2 | FLV, AVI, ASF, 3GP, WebM, 3G2, MP4 |
| FEATURES | Samsung Galaxy J7 Duo | Black Shark 2 |
|---|
| 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 | Ambient light sensor, gyro sensor, geomagnetic sensor, distance sensor, gravity sensor | |
| Security Devices | Face recognition, fingerprint reader | Fingerprint reader (under display) | |
| Additional Phone Features | - | MIMO technology, MU-MIMO technology, X-Type Smart Antenna, Revolutionary Liquid Cooling 3.0, Ludicrous Mode, Black Shark Gaming AI, TrueClarity MEMC processing, SHARK key |
| OTHERS | Samsung Galaxy J7 Duo | Black Shark 2 |
|---|
| Included Accessories | Power adapter | Power adapter, SIM card removal tool, screen protector, USB-C to 3.5 jack adapter, USB-C cable, protective case |
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