Samsung Galaxy J7 Duo (SM-J720F/DS 32GB/3GB) vs Samsung Galaxy J3 (SM-J320ZN)
Side by side comparison between Samsung Galaxy J7 Duo vs Samsung Galaxy J3 phones, differences, pros, cons and full specifications. What's the better?
,
5.5"
AMOLED
AMOLED
720x1280
13
MP
MP
8mp
3GB
RAM
RAM
Octa-core
3000
mAh
mAh
(Removable)
vs
5"
AMOLED
AMOLED
720x1280
8
MP
MP
5mp
1.5GB
RAM
RAM
Quad-core
2600
mAh
mAh
(Removable)
What's the better phone? Samsung Galaxy J7 Duo (SM-J720F/DS 32GB/3GB)
The phonemore's choice is much more technical than personal. Therefore, you shouldn't only consider this. Our goal is to help you, but what's important to us may not be important to you. You decide which one is the best! Comment!
18 Advantages 
4 Advantages | 23 Common items in both devices |
| Until 256GB microSD, microSDXC |
| Plastic body, glass front |
| Super AMOLED |
| 16 million |
| 720x1280 pixels |
| Only digital zoom |
| Autofocus |
| +16 specs and more in the table below |
Check the comparison table below for more items that are not evaluated in comparison score above.
Highlight differences Clear highlight📱 Model features | ||
| Galaxy J7 Duo (SM-J720F/DS 32GB/3GB) | Galaxy J3 (SM-J320ZN) | |
| Model | Galaxy J7 Duo (SM-J720F/DS 32GB/3GB) | Galaxy J3 (SM-J320ZN) |
| Other model names | Galaxy J7 Duo (32GB + 3GB RAM) Dual-Sim, Samsung J720 | Galaxy J3 2016 4G J320ZN Single-sim |
| Country or region available |      (Europe), (Global, International), Singapore, Thailand, Vietnam |  Australia |
| Brand | Samsung | Samsung |
| Release date | 4/1/2018 | 1/1/2016 |
| Depth | 8.2 millimeters (0.32 inches) | 7.9 millimeters (0.31 inches) |
| Size (width x height) | 77.2 x 153.5 millimeters (3.04 x 6.04 in) | 71.12 x 142.3 millimeters (2.8 x 5.6 in) |
| Weight | 174 grams (6.09 ounces) | 138 grams (4.83 ounces) |
| Build, materials | Plastic body, glass front | Plastic body, glass front |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| Galaxy J7 Duo (SM-J720F/DS 32GB/3GB) | Galaxy J3 (SM-J320ZN) | |
| Display type | Super AMOLED | Super AMOLED |
| Screen size | 5.5" inches | 5" inches |
| Screen-to-body ratio | ~70.4% (screen-to-body ratio) | ~68.1% (screen-to-body ratio) |
| Display resolution | 720x1280 pixels (16:9) | 720x1280 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch 5-points |
| Pixel density (dot pitch) | 267 PPI | 294 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass | Dragontrail Glass |
| Refresh rate | 60Hz | feature not registered |
| Display features | Not supported | feature not registered |
🤖 Operating System | ||
| Galaxy J7 Duo (SM-J720F/DS 32GB/3GB) | Galaxy J3 (SM-J320ZN) | |
| System version | Android 8.0 Oreo | Android 5.1.1 Lollipop |
| Firmware update | Android 10 | Android 7.1.1 Nougat |
| User Interface | One UI 2.0 | feature not registered |
⚙️ Processor | ||
| Galaxy J7 Duo (SM-J720F/DS 32GB/3GB) | Galaxy J3 (SM-J320ZN) | |
| Chipset | 64bit: Samsung Exynos 7885 (14nm) | 32bit: Spreadtrum SC8830A (28nm) |
| CPU | Octa-core, 2 processors: 2x 2.2GHz ARM Cortex-A73 (Dual-core) 6x 1.6GHz ARM Cortex-A53 (Hexa-core) | Quad-core, 1 processor: 4x 1.5GHz ARM Cortex-A7 (Quad-core) |
| GPU graphical controller | ARM Mali-G71 MP2 | ARM Mali-400 MP2 |
| Performance (benchmark) | AnTuTu: 98104 (v7) | feature not registered |
💽 Memory and storage | ||
| Galaxy J7 Duo (SM-J720F/DS 32GB/3GB) | Galaxy J3 (SM-J320ZN) | |
| RAM memory | 3GB LPDDR4 | 1.5GB LPDDR3 |
| Internal storage | 32GB (21GB available) eMMC 5.1 | 8GB (4GB available) eMMC 4.5 |
| External storage | Until 256GB microSD, microSDXC (dedicated slot) | Until 256GB microSD, microSDXC (dedicated slot) |
📶 Mobile networks | ||
| Galaxy J7 Duo (SM-J720F/DS 32GB/3GB) | Galaxy J3 (SM-J320ZN) | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card (dedicated slot) | Not supported |
| SIM card | 2 slots (Dual-SIM) micro-SIM (3FF) | 1 slot (Single-SIM) micro-SIM (3FF) |
| Maximum Download / Upload | 150/50 Mbps | 150/50 Mbps |
| Network technology | 2G, 3G, 4G | 2G, 3G, 4G |
| Frequency, bands | Expand band details Collapse details | |
| GSM MHz band | Quad-Band 850/900/1800/1900 | Quad-Band 850/900/1800/1900 |
| Primary 2G network | GSM 850/900/1800/1900 | GSM 850/900/1800/1900 |
| Primary 3G network | UMTS 850/900/1900/2100 | UMTS 850/900/1900/2100 |
| Primary 4G network | LTE Cat4 (1, 3, 5, 7, 8, 20) TD-LTE (38, 40, 41) | LTE Cat4 (Bands 1, 3, 5, 7, 8, 28) TD-LTE (Bands 40) |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE |
| Secondary 2G network | GSM 850/900/1800/1900 | Not supported |
| Secondary 3G network | UMTS 850/900/1900/2100 | Not supported |
| Secondary 4G network | Not supported | Not supported |
| Secondary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+ | Not supported |
📷 Camera | ||
| Galaxy J7 Duo (SM-J720F/DS 32GB/3GB) | Galaxy J3 (SM-J320ZN) | |
| Back camera (main camera) | (dual camera) 13 megapixels 5MP depth f/1.9 | 8 megapixels |
| Main camera resolution | 4128x3096 pixels | 3264x2448 pixels |
| Video recording (primary) | Full HD (1920x1080) 30 fps | Full HD (1920x1080) 30 fps |
| Flash | LED flash on both cameras | LED flash |
| Focal aperture | f/1.9 (aperture) | f/2.2 (aperture) |
| Focal length | feature not registered | feature not registered |
| Sensor size | feature not registered | feature not registered |
| Pixel size | feature not registered | feature not registered |
| Autofocus | Autofocus | Autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | EIS: Digital stabilization | EIS: Digital stabilization |
| Zoom | Only digital zoom | Only digital zoom |
| Face/smile detection | Face detection, Smile detection | Face detection, Smile detection |
| BSI sensor | Not supported | Not supported |
| HDR | HDR photo only main camera | HDR photo only main camera |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| Galaxy J7 Duo (SM-J720F/DS 32GB/3GB) | Galaxy J3 (SM-J320ZN) | |
| Front camera (secondary) | 8 megapixels | 5 megapixels |
| Front camera resolution | 3264x2448 pixels | 2592x1944 pixels |
| Video recording (secondary) | Full HD (1920x1080) | HD (1280x720) |
| Front flash | LED | Not supported |
| Focal aperture | f/1.9 (aperture) | feature not registered |
| Focal length | feature not registered | feature not registered |
| Sensor size | feature not registered | feature not registered |
| Pixel size | feature not registered | feature not registered |
🔉 Sound and multimedia | ||
| Galaxy J7 Duo (SM-J720F/DS 32GB/3GB) | Galaxy J3 (SM-J320ZN) | |
| Loudspeaker | Mono sound (not stereo) | Supported |
| Active noise cancellation | Not supported | 2 microphones or more |
| Radio | FM | FM (RDS) |
| TV | Not supported | Not supported |
| Video formats | MP4, H.264, H.263, XviD, MKV | MP4, H.264, H.263, MKV, WMV |
| Audio formats | MP3, WAV, WMA, eAAC+, FLAC | MP3, WAV, WMA, eAAC+, FLAC |
🔌 Connectivity | ||
| Galaxy J7 Duo (SM-J720F/DS 32GB/3GB) | Galaxy J3 (SM-J320ZN) | |
| USB | MicroUSB 2.0 | MicroUSB 2.0, USB OTG On-The-Go |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | Not supported | Not supported |
| Bluetooth | 5.0 + A2DP/LE | 4.0 + A2DP |
| WiFi | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot | 802.11 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot |
| DLNA | Not supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS, BeiDou | A-GPS, GeoTagging, GLONASS |
| NFC | Not supported | Not supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Galaxy J7 Duo (SM-J720F/DS 32GB/3GB) | Galaxy J3 (SM-J320ZN) | |
| Sensors | Accelerometer ANT+ Face unlock Fingerprint sensor (front-mounted) Proximity sensor | Accelerometer Ambient light sensor Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Galaxy J7 Duo (SM-J720F/DS 32GB/3GB) | Galaxy J3 (SM-J320ZN) | |
| Battery type | Li-Ion: lithium-ion (Removable) | Li-Ion: lithium-ion (Removable) |
| Battery capacity | 3000 mAh | 2600 mAh |
| Charger, watts | Wired charging | Wired charging |
| Inductive / wireless charging | Not supported | feature not registered |
| Talk time autonomy | 20 hours | 13 hours |
| Standby | feature not registered | 330 hours (13.8 days) |
➕ Other features | ||
| Galaxy J7 Duo (SM-J720F/DS 32GB/3GB) | Galaxy J3 (SM-J320ZN) | |
| Call control | Voice dialing, Voice recorder | Voice dialing, Voice recorder |
| Messaging | SMS (T9), MMS, E-mail, Push mail | SMS (T9), MMS, E-mail, Push mail |
| Hands-free calling | Supported | Supported |
| Video calling | Supported | Supported |
| Ringtones | Polyphonic and customized | Polyphonic and customized |
| Web browser | HTML, XHTML, HTML5 | HTML, XHTML, HTML5 |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | • Colors: Black, Gold, Rose Gold, White • Samsung Pay | • Colors: Black, White, Gold |
☢️ Radiation rate | ||
| Galaxy J7 Duo (SM-J720F/DS 32GB/3GB) | Galaxy J3 (SM-J320ZN) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | feature not registered |
| SAR 2W/kg (Europe, UK, etc.) | 0.543W/kg (head), 1.397W/kg (body) | 0.506W/kg (head), 1.25W/kg (body) |