Samsung Galaxy Watch (42mm SM-R815F) vs Samsung Galaxy J7 Duo (SM-J720F/DS 32GB/3GB)
Side by side comparison between Samsung Galaxy Watch vs Samsung Galaxy J7 Duo devices, differences, pros, cons and full specifications. What's the better?
,
1.2"
AMOLED
AMOLED
360x360
N/A
1.5GB
RAM
RAM
Dual-core
270
mAh
mAh
(Non removable)
vs
5.5"
AMOLED
AMOLED
720x1280
13
MP
MP
8mp
3GB
RAM
RAM
Octa-core
3000
mAh
mAh
(Removable)
What's the better device? 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!
11 Advantages 
25 Advantages | 8 Common items in both devices |
| Super AMOLED |
| 16 million |
| 4G LTE |
| Capacitive |
| Multitouch |
| Accelerometer |
| A-GPS, GeoTagging, GLONASS / A-GPS, GeoTagging, GLONASS, BeiDou |
| + 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 Watch (42mm SM-R815F) | Galaxy J7 Duo (SM-J720F/DS 32GB/3GB) | |
| Model | Galaxy Watch (42mm SM-R815F) | Galaxy J7 Duo (SM-J720F/DS 32GB/3GB) |
| Other model names | Galaxy Watch 42mm (4G LTE) SM-R815FZDAAMO, Samsung Galileo | Galaxy J7 Duo (32GB + 3GB RAM) Dual-Sim, Samsung J720 |
| Country or region available |        (Europe), South Africa, Saudi Arabia, Australia, Israel, Singapore, Taiwan |    (Europe), (Global, International), Singapore, Thailand, Vietnam |
| Brand | Samsung | Samsung |
| Release date | 8/1/2018 | 4/1/2018 |
| Depth | 12.7 millimeters (0.5 inches) | 8.2 millimeters (0.32 inches) |
| Size (width x height) | 41.9 x 45.7 millimeters (1.65 x 1.8 in) | 77.2 x 153.5 millimeters (3.04 x 6.04 in) |
| Weight | 49 grams (1.72 ounces) | 174 grams (6.09 ounces) |
| Build, materials | Stainless steel body, glass front | Plastic body, glass front |
| Protection against water and others | 5 ATM: 50 meters waterproof. MIL-STD-810G military certified: salt, dust, humidity, rain, vibration, solar radiation, transport and thermal shock resistant. | Not supported |
📲 Display | ||
| Galaxy Watch (42mm SM-R815F) | Galaxy J7 Duo (SM-J720F/DS 32GB/3GB) | |
| Display type | Super AMOLED | Super AMOLED |
| Screen size | 1.2" inches | 5.5" inches |
| Screen-to-body ratio | ~24.3% (screen-to-body ratio) | ~70.4% (screen-to-body ratio) |
| Display resolution | 360x360 pixels (1:1) | 720x1280 pixels (16:9) |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 424 PPI | 267 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass DX+ | Gorilla Glass |
| Refresh rate | feature not registered | 60Hz |
| Display features | Not supported | Not supported |
🤖 Operating System | ||
| Galaxy Watch (42mm SM-R815F) | Galaxy J7 Duo (SM-J720F/DS 32GB/3GB) | |
| System version | Tizen 4.0 | Android 8.0 Oreo |
| Firmware update | feature not registered | Android 10 |
| User Interface | feature not registered | One UI 2.0 |
⚙️ Processor | ||
| Galaxy Watch (42mm SM-R815F) | Galaxy J7 Duo (SM-J720F/DS 32GB/3GB) | |
| Chipset | 64bit: Samsung Exynos 9 Dual 9110 (10nm) | 64bit: Samsung Exynos 7885 (14nm) |
| CPU | Dual-core, 1 processor: 2x 1.15GHz ARM Cortex-A53 (Dual-core) | Octa-core, 2 processors: 2x 2.2GHz ARM Cortex-A73 (Dual-core) 6x 1.6GHz ARM Cortex-A53 (Hexa-core) |
| GPU graphical controller | ARM Mali-T720 MP1 | ARM Mali-G71 MP2 |
| Performance (benchmark) | feature not registered | AnTuTu: 98104 (v7) |
💽 Memory and storage | ||
| Galaxy Watch (42mm SM-R815F) | Galaxy J7 Duo (SM-J720F/DS 32GB/3GB) | |
| RAM memory | 1.5GB LPDDR3 | 3GB LPDDR4 |
| Internal storage | 4GB (1.5GB available) eMMC | 32GB (21GB available) eMMC 5.1 |
| External storage | Not supported | Until 256GB microSD, microSDXC (dedicated slot) |
📶 Mobile networks | ||
| Galaxy Watch (42mm SM-R815F) | Galaxy J7 Duo (SM-J720F/DS 32GB/3GB) | |
| Dual-SIM | Not supported | Dual-SIM Standby - Call active on one sim card (dedicated slot) |
| SIM card | 1 slot (Single-SIM) e-SIM (Eletronic) | 2 slots (Dual-SIM) micro-SIM (3FF) |
| Maximum Download / Upload | 10 Mbps | 150/50 Mbps |
| Network technology | 3G, 4G | 2G, 3G, 4G |
| Frequency, bands | Expand band details Collapse details | |
| GSM MHz band | Not supported | Quad-Band 850/900/1800/1900 |
| Primary 2G network | Not supported | GSM 850/900/1800/1900 |
| Primary 3G network | UMTS 900/1900 | UMTS 850/900/1900/2100 |
| Primary 4G network | LTE (Bands 1,3,7,8,20) | LTE Cat4 (1, 3, 5, 7, 8, 20) TD-LTE (38, 40, 41) |
| Primary 5G network | Not supported | Not supported |
| Primary data network | UMTS, HSDPA, HSUPA, HSPA+, LTE | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE |
| Secondary 2G network | Not supported | GSM 850/900/1800/1900 |
| Secondary 3G network | Not supported | UMTS 850/900/1900/2100 |
| Secondary 4G network | Not supported | Not supported |
| Secondary data network | Not supported | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+ |
📷 Camera | ||
| Galaxy Watch (42mm SM-R815F) | Galaxy J7 Duo (SM-J720F/DS 32GB/3GB) | |
| Back camera (main camera) | Not supported | (dual camera) 13 megapixels 5MP depth f/1.9 |
| Main camera resolution | Not supported | 4128x3096 pixels |
| Video recording (primary) | Not supported | Full HD (1920x1080) 30 fps |
| Flash | Not supported | LED flash on both cameras |
| Focal aperture | feature not registered | f/1.9 (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 | Not supported | Autofocus |
| Touch focus | Not supported | Supported |
| Image stabilization | Not supported | EIS: Digital stabilization |
| Zoom | Not supported | Only digital zoom |
| Face/smile detection | Not supported | Face detection, Smile detection |
| BSI sensor | Not supported | Not supported |
| HDR | Not supported | HDR photo only main camera |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| Galaxy Watch (42mm SM-R815F) | Galaxy J7 Duo (SM-J720F/DS 32GB/3GB) | |
| Front camera (secondary) | Not supported | 8 megapixels |
| Front camera resolution | Not supported | 3264x2448 pixels |
| Video recording (secondary) | Not supported | Full HD (1920x1080) |
| Front flash | Not supported | LED |
| Focal aperture | feature not registered | f/1.9 (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 |
🔉 Sound and multimedia | ||
| Galaxy Watch (42mm SM-R815F) | Galaxy J7 Duo (SM-J720F/DS 32GB/3GB) | |
| Loudspeaker | Supported | Mono sound (not stereo) |
| Active noise cancellation | Not supported | Not supported |
| Radio | Not supported | FM |
| TV | Not supported | Not supported |
| Video formats | MP4 | MP4, H.264, H.263, XviD, MKV |
| Audio formats | MP3, WAV, WMA, OGG, eAAC+ | MP3, WAV, WMA, eAAC+, FLAC |
🔌 Connectivity | ||
| Galaxy Watch (42mm SM-R815F) | Galaxy J7 Duo (SM-J720F/DS 32GB/3GB) | |
| USB | Not supported | MicroUSB 2.0 |
| Audio output | Not supported | 3.5mm jack |
| TV output | Not supported | Not supported |
| Bluetooth | 4.2 + A2DP | 5.0 + A2DP/LE |
| WiFi | 802.11 b/g/n [wifi4] (2.4GHz) | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot |
| DLNA | Not supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS | A-GPS, GeoTagging, GLONASS, BeiDou |
| NFC | Supported | Not supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Galaxy Watch (42mm SM-R815F) | Galaxy J7 Duo (SM-J720F/DS 32GB/3GB) | |
| Sensors | Accelerometer Ambient light sensor Barometer Gyroscope Heart rate Pedometer | Accelerometer ANT+ Face unlock Fingerprint sensor (front-mounted) Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Galaxy Watch (42mm SM-R815F) | Galaxy J7 Duo (SM-J720F/DS 32GB/3GB) | |
| Battery type | Li-Ion: lithium-ion (Non removable) | Li-Ion: lithium-ion (Removable) |
| Battery capacity | 270 mAh | 3000 mAh |
| Charger, watts | 3.5W (5V/0.7A) Wired charging | Wired charging |
| Inductive / wireless charging | Qi wireless charging | Not supported |
| Talk time autonomy | feature not registered | 20 hours |
| Standby | 72 hours (3 days) | feature not registered |
➕ Other features | ||
| Galaxy Watch (42mm SM-R815F) | Galaxy J7 Duo (SM-J720F/DS 32GB/3GB) | |
| Call control | Voice dialing, Voice recorder, Voice commands | 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 | Not supported | Supported |
| Ringtones | Polyphonic and customized | Polyphonic and customized |
| Web browser | Not supported | HTML, XHTML, HTML5 |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | • Colors: Midnight Black, Rose Gold • Straps: Black, Grey, Red, Yellow, Purple, Pink, Brown • Compatible with standard 20mm straps • Always-on display • Rotating bezel • Samsung Pay | • Colors: Black, Gold, Rose Gold, White • Samsung Pay |
☢️ Radiation rate | ||
| Galaxy Watch (42mm SM-R815F) | Galaxy J7 Duo (SM-J720F/DS 32GB/3GB) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | feature not registered |
| SAR 2W/kg (Europe, UK, etc.) | 0.383W/kg (head), 0.383W/kg (body) | 0.543W/kg (head), 1.397W/kg (body) |