Samsung Galaxy Watch (42mm SM-R815F) vs Samsung Galaxy J3 (SM-J320FN)
Side by side comparison between Samsung Galaxy Watch vs Samsung Galaxy J3 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"
AMOLED
AMOLED
720x1280
8
MP
MP
5mp
1.5GB
RAM
RAM
Quad-core
2600
mAh
mAh
(Removable)
What's the better device? Samsung Galaxy J3 (SM-J320FN)
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!
9 Advantages 
18 Advantages | 12 Common items in both devices |
| 1.5GB LPDDR3 |
| Super AMOLED |
| 16 million |
| 4G LTE |
| Capacitive |
| Multitouch |
| Accelerometer |
| +5 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 J3 (SM-J320FN) | |
| Model | Galaxy Watch (42mm SM-R815F) | Galaxy J3 (SM-J320FN) |
| Other model names | Galaxy Watch 42mm (4G LTE) SM-R815FZDAAMO, Samsung Galileo | Galaxy J3 2016 J320FN (NFC) Single-sim |
| Country or region available |        (Europe), South Africa, Saudi Arabia, Australia, Israel, Singapore, Taiwan | (Europe) |
| Brand | Samsung | Samsung |
| Release date | 8/1/2018 | 1/1/2016 |
| Depth | 12.7 millimeters (0.5 inches) | 7.9 millimeters (0.31 inches) |
| Size (width x height) | 41.9 x 45.7 millimeters (1.65 x 1.8 in) | 71.12 x 142.3 millimeters (2.8 x 5.6 in) |
| Weight | 49 grams (1.72 ounces) | 138 grams (4.83 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 J3 (SM-J320FN) | |
| Display type | Super AMOLED | Super AMOLED |
| Screen size | 1.2" inches | 5" inches |
| Screen-to-body ratio | ~24.3% (screen-to-body ratio) | ~68.1% (screen-to-body ratio) |
| Display resolution | 360x360 pixels (1:1) | 720x1280 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch 5-points |
| Pixel density (dot pitch) | 424 PPI | 294 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass DX+ | Dragontrail Glass |
| Refresh rate | feature not registered | feature not registered |
| Display features | Not supported | feature not registered |
🤖 Operating System | ||
| Galaxy Watch (42mm SM-R815F) | Galaxy J3 (SM-J320FN) | |
| System version | Tizen 4.0 | Android 5.1.1 Lollipop |
| Firmware update | feature not registered | Android 7.1.1 Nougat |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| Galaxy Watch (42mm SM-R815F) | Galaxy J3 (SM-J320FN) | |
| Chipset | 64bit: Samsung Exynos 9 Dual 9110 (10nm) | 32bit: Spreadtrum SC8830A (28nm) |
| CPU | Dual-core, 1 processor: 2x 1.15GHz ARM Cortex-A53 (Dual-core) | Quad-core, 1 processor: 4x 1.5GHz ARM Cortex-A7 (Quad-core) |
| GPU graphical controller | ARM Mali-T720 MP1 | ARM Mali-400 MP2 |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Galaxy Watch (42mm SM-R815F) | Galaxy J3 (SM-J320FN) | |
| RAM memory | 1.5GB LPDDR3 | 1.5GB LPDDR3 |
| Internal storage | 4GB (1.5GB available) eMMC | 8GB (4GB available) eMMC 4.5 |
| External storage | Not supported | Until 256GB microSD, microSDXC (dedicated slot) |
📶 Mobile networks | ||
| Galaxy Watch (42mm SM-R815F) | Galaxy J3 (SM-J320FN) | |
| Dual-SIM | Not supported | Not supported |
| SIM card | 1 slot (Single-SIM) e-SIM (Eletronic) | 1 slot (Single-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 (Bands 1, 3, 5, 7, 8, 20) |
| Primary 5G network | Not supported | Not supported |
| Primary data network | UMTS, HSDPA, HSUPA, HSPA+, LTE | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE |
| Secondary 2G network | Not supported | Not supported |
| Secondary 3G network | Not supported | Not supported |
| Secondary 4G network | Not supported | Not supported |
| Secondary data network | Not supported | Not supported |
📷 Camera | ||
| Galaxy Watch (42mm SM-R815F) | Galaxy J3 (SM-J320FN) | |
| Back camera (main camera) | Not supported | 8 megapixels |
| Main camera resolution | Not supported | 3264x2448 pixels |
| Video recording (primary) | Not supported | Full HD (1920x1080) 30 fps |
| Flash | Not supported | LED flash |
| Focal aperture | feature not registered | 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 | 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 J3 (SM-J320FN) | |
| Front camera (secondary) | Not supported | 5 megapixels |
| Front camera resolution | Not supported | 2592x1944 pixels |
| Video recording (secondary) | Not supported | HD (1280x720) |
| Front flash | Not supported | Not supported |
| Focal aperture | feature not registered | 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 Watch (42mm SM-R815F) | Galaxy J3 (SM-J320FN) | |
| Loudspeaker | Supported | Supported |
| Active noise cancellation | Not supported | 2 microphones or more |
| Radio | Not supported | FM (RDS) |
| TV | Not supported | Not supported |
| Video formats | MP4 | MP4, H.264, H.263, MKV, WMV |
| Audio formats | MP3, WAV, WMA, OGG, eAAC+ | MP3, WAV, WMA, eAAC+, FLAC |
🔌 Connectivity | ||
| Galaxy Watch (42mm SM-R815F) | Galaxy J3 (SM-J320FN) | |
| USB | Not supported | MicroUSB 2.0, USB OTG On-The-Go |
| Audio output | Not supported | 3.5mm jack |
| TV output | Not supported | Not supported |
| Bluetooth | 4.2 + A2DP | 4.0 + A2DP |
| WiFi | 802.11 b/g/n [wifi4] (2.4GHz) | 802.11 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot |
| DLNA | Not supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS | A-GPS, GeoTagging, GLONASS |
| NFC | Supported | Supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Galaxy Watch (42mm SM-R815F) | Galaxy J3 (SM-J320FN) | |
| Sensors | Accelerometer Ambient light sensor Barometer Gyroscope Heart rate Pedometer | Accelerometer Ambient light sensor Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Galaxy Watch (42mm SM-R815F) | Galaxy J3 (SM-J320FN) | |
| Battery type | Li-Ion: lithium-ion (Non removable) | Li-Ion: lithium-ion (Removable) |
| Battery capacity | 270 mAh | 2600 mAh |
| Charger, watts | 3.5W (5V/0.7A) Wired charging | Wired charging |
| Inductive / wireless charging | Qi wireless charging | feature not registered |
| Talk time autonomy | feature not registered | 13 hours |
| Standby | 72 hours (3 days) | 330 hours (13.8 days) |
➕ Other features | ||
| Galaxy Watch (42mm SM-R815F) | Galaxy J3 (SM-J320FN) | |
| 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, White, Gold |
☢️ Radiation rate | ||
| Galaxy Watch (42mm SM-R815F) | Galaxy J3 (SM-J320FN) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | 1.167W/kg (head), 1.125W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | 0.383W/kg (head), 0.383W/kg (body) | 0.477W/kg (head), 1.27W/kg (body) |