In depth comparison and review of Samsung Galaxy J3 (2017) DUOS and Samsung Galaxy J7 (2017) DUOS. 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 J7 (2017) DUOS |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | SM-J330F | SM-J730F/DS | |
| Form Factor | Touch | Touch | |
| Height | 143.2 mm | 152.5 mm | Samsung Galaxy J7 (2017) DUOS has greater height than Samsung Galaxy J3 (2017) DUOS. |
| Width | 70.3 mm | 74.8 mm | Samsung Galaxy J7 (2017) DUOS has greater width than Samsung Galaxy J3 (2017) DUOS. |
| Depth | 8.2 mm | 8 mm | Samsung Galaxy J7 (2017) DUOS is narrower than Samsung Galaxy J3 (2017) DUOS. |
| Weight | 142 g | 181 g | Samsung Galaxy J3 (2017) DUOS is lighter than Samsung Galaxy J3 (2017) DUOS. |
| Body Colour | Black | Blue | Black | |
| Body Material | Metal | - | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | 1.32 W/kg (body), 0.658 W/kg (head) | 1.33 W/kg (body), 0.567 W/kg (head) | |
| Connector Type | Micro-USB - 5 pin Micro-USB Type B Headset jack - mini-phone 3.5mm |
Micro-USB - 5 pin Micro-USB Type B Headset jack - mini-phone 3.5mm |
|
| SIM Card Type (Size) | Nano SIM | Nano SIM | |
| SIM Card Qty | Dual-SIM | Dual-SIM |
| DISPLAY | Samsung Galaxy J3 (2017) DUOS | Samsung Galaxy J7 (2017) DUOS |
|---|
| Display Type | LCD display | OLED display | |
|---|---|---|---|
| Display Technology | PLS | Full HD Super AMOLED | |
| Screen Size (Display Size) | 5" | 5.5" | Samsung Galaxy J7 (2017) DUOS has larger screen size than Samsung Galaxy J3 (2017) DUOS. |
| Screen Resolution (Display Resolution) | 1280 x 720 pixels | 1920 x 1080 pixels | Samsung Galaxy J7 (2017) DUOS has better screen resolution than Samsung Galaxy J3 (2017) DUOS. |
| Display Format | HD | Full HD | |
| Colour Depth | 16.7 million colours | 16.7 million colours | Both phones have the same color depth. |
| Display Features | - | Always-on display |
| PROCESSOR | Samsung Galaxy J3 (2017) DUOS | Samsung Galaxy J7 (2017) DUOS |
|---|
| Clock Speed | 1.4 GHz | 1.6 GHz | Samsung Galaxy J7 (2017) DUOS has higher clock speed than Samsung Galaxy J3 (2017) DUOS. |
|---|---|---|---|
| Processor Core Qty | Quad-core | 8-core | Samsung Galaxy J7 (2017) DUOS has higher processor core quantity than Samsung Galaxy J3 (2017) DUOS. |
| MEMORY | Samsung Galaxy J3 (2017) DUOS | Samsung Galaxy J7 (2017) DUOS |
|---|
| RAM | 2 GB | 3 GB | Samsung Galaxy J7 (2017) DUOS has more RAM than Samsung Galaxy J3 (2017) DUOS. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 16 GB | 16 GB | Both phones have the same internal memory capacity. |
| User Memory | 10.3 GB | 10 GB | |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 256 GB | microSDHC, microSDXC - up to 256 GB |
| CAMERA | Samsung Galaxy J3 (2017) DUOS | Samsung Galaxy J7 (2017) DUOS |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution | 13 Megapixel | 13 Megapixel | Both phones have the same camera resolution. |
| Lens Aperture | F/1.9 | F/1.7 | Samsung Galaxy J7 (2017) DUOS has better lens aperture than Samsung Galaxy J3 (2017) DUOS. |
| Focus Adjustment | Automatic | Automatic | |
| Special Effects | HDR | - | |
| Camera Modes | Panorama, Pro mode, night mode | - | |
| Light Source | LED light | LED flash | |
| Video Resolutions | 1920 x 1080 (1080p) at 30 fps | 1920 x 1080 (1080p) at 30 fps |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 5 Megapixel | 13 Megapixel | Samsung Galaxy J7 (2017) DUOS has better front camera resolution than Samsung Galaxy J3 (2017) DUOS. |
| Lens Aperture (Front) | F/2.2 | F/1.9 | Samsung Galaxy J7 (2017) DUOS has better front lens aperture than Samsung Galaxy J3 (2017) DUOS. |
| Special Effects (Front) | HDR | - |
| BATTERY AND CHARGING | Samsung Galaxy J3 (2017) DUOS | Samsung Galaxy J7 (2017) DUOS |
|---|
| Battery Capacity (Battery Size) | 2400 mAh | 3600 mAh | Samsung Galaxy J7 (2017) DUOS has larger battery capacity than Samsung Galaxy J3 (2017) DUOS. |
|---|---|---|---|
| Talk Time | 900 minutes | 1440 minutes | Samsung Galaxy J7 (2017) DUOS 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 |
Active online usage (WCDMA): up to 12 hrs Active online usage (LTE): up to 15 hrs Active online usage (Wi-Fi): up to 16 hrs Playback (video): up to 18 hrs Playback (audio): up to 59 hrs Playback (audio (Always On Display Off)): up to 91 hrs Talk (WCDMA): up to 1440 min |
| CELLULAR | Samsung Galaxy J3 (2017) DUOS | Samsung Galaxy J7 (2017) DUOS |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
| Operating System | Android 7.0 Nougat | Google Android | |
| Navigation | GPS, GLONASS, BeiDou | GPS, GLONASS, BeiDou |
| COMMUNICATIONS | Samsung Galaxy J3 (2017) DUOS | Samsung Galaxy J7 (2017) DUOS |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, LTE, FDD-LTE, TDD-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 4, Band 5, Band 8 | Band 1, Band 2, Band 5, Band 8 | |
| 3G UMTS Frequency | 2100, 1900, 1700, 850, 900 | 2100, 1900, 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 3, Band 5, Band 7, Band 8, Band 20, Band 40 | |
| 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 1800+, FDD 850, FDD 2600, FDD 900, FDD 800 DD, TDD 2300 | |
| Wireless Interface | IEEE 802.11b/g/n | IEEE 802.11a/b/g/n/ac, ANT+/ANT | |
| Bluetooth | Bluetooth 4.2 | Bluetooth 4.1 | |
| Bluetooth Profiles | HFP, HSP, OPP, PAN, A2DP, AVRCP, HID, PBAP, MAP, DIP, HOGP | HFP, HSP, OPP, PAN, A2DP, AVRCP, HID, PBAP, MAP, HOGP | |
| NFC | - | Yes | Samsung Galaxy J7 (2017) DUOS has NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | SMS, MMS |
| MEDIA | Samsung Galaxy J3 (2017) DUOS | Samsung Galaxy J7 (2017) DUOS |
|---|
| Supported Digital Audio Standards | WMA, MP3, FLAC, OGG, MP4 | WAV, WMA, AAC, AMR, MP3, FLAC, XMF, OGG, MIDI, M4A, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, MID | |
|---|---|---|---|
| Supported Digital Video Standards | VC-1, MPEG-4, H.264, H.263, MP43, VP8, VP9, H.265, WMV7 | MKV, FLV, AVI, MPEG-4, WMV, ASF, 3GP, M4V, WebM, 3G2 |
| FEATURES | Samsung Galaxy J3 (2017) DUOS | Samsung Galaxy J7 (2017) DUOS |
|---|
| Phone Functions | Speakerphone, call timer, conference call, flight mode, vibrating alert | Speakerphone, call timer, conference call, flight mode, vibrating alert | |
|---|---|---|---|
| Sensors | Accelerometer, proximity sensor | Accelerometer, proximity sensor, gyro sensor, hall sensor, RGB sensor, geomagnetic sensor | |
| Security Devices | - | Fingerprint reader | |
| Additional Phone Features | Dual Messenger | - |
| OTHERS | Samsung Galaxy J3 (2017) DUOS | Samsung Galaxy J7 (2017) DUOS |
|---|
| Included Accessories | Power adapter | Power adapter |
|---|
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