Apple Watch 2 (Aluminum 38mm) vs Samsung Galaxy J4 (SM-J400G/DS 16GB)
Side by side comparison between Apple Watch 2 vs Samsung Galaxy J4 devices, differences, pros, cons and full specifications. What's the better?
,
1.5"
AMOLED
AMOLED
340x272
N/A
512MB
RAM
RAM
Dual-core
273
mAh
mAh
(Non removable)
vs
5.5"
AMOLED
AMOLED
720x1280
13
MP
MP
5mp
2GB
RAM
RAM
Quad-core
3000
mAh
mAh
(Removable)
What's the better device? Samsung Galaxy J4 (SM-J400G/DS 16GB)
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!
10 Advantages 
21 Advantages | 6 Common items in both devices |
| 16 million |
| Capacitive |
| Multitouch |
| Accelerometer |
| A-GPS, GeoTagging, GLONASS / A-GPS, GeoTagging, GLONASS, BeiDou |
| 802.11 b/g/n [wifi4] |
| + 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 | ||
| Apple Watch 2 (Aluminum 38mm) | Galaxy J4 (SM-J400G/DS 16GB) | |
| Model | Watch 2 (Aluminum 38mm) | Galaxy J4 (SM-J400G/DS 16GB) |
| Other model names | Apple Watch Series 2 Aluminum A1757 38mm, iWatch S2 | Galaxy J4 J400G/Dual-sim, SM-J400GZPDBRI |
| Country or region available |  (Global, International) |  Taiwan |
| Brand | Apple | Samsung |
| Release date | 12/1/2016 | 5/1/2018 |
| Depth | 11.4 millimeters (0.45 inches) | 8.1 millimeters (0.32 inches) |
| Size (width x height) | 33.3 x 38.6 millimeters (1.31 x 1.52 in) | 77.2 x 151.7 millimeters (3.04 x 5.97 in) |
| Weight | 28 grams (.98 ounces) | 175 grams (6.13 ounces) |
| Build, materials | Aluminum body, glass front, ceramic back | Plastic body |
| Protection against water and others | 5 ATM: 50 meters waterproof | Not supported |
📲 Display | ||
| Apple Watch 2 (Aluminum 38mm) | Galaxy J4 (SM-J400G/DS 16GB) | |
| Display type | AMOLED | Super AMOLED |
| Screen size | 1.5" inches | 5.5" inches |
| Screen-to-body ratio | ~55.1% (screen-to-body ratio) | ~71.2% (screen-to-body ratio) |
| Display resolution | 340x272 pixels | 720x1280 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 290 PPI | 267 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Scratch-resistant glass | Not supported |
| Refresh rate | feature not registered | feature not registered |
| Display features | feature not registered | feature not registered |
🤖 Operating System | ||
| Apple Watch 2 (Aluminum 38mm) | Galaxy J4 (SM-J400G/DS 16GB) | |
| System version | WatchOS 3.0 | Android 8.0 Oreo |
| Firmware update | WatchOS 5.0 | Android 9.0 Pie |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| Apple Watch 2 (Aluminum 38mm) | Galaxy J4 (SM-J400G/DS 16GB) | |
| Chipset | 32bit: Apple S2 (28nm) | 64bit: Samsung Exynos 7570 (14nm) |
| CPU | Dual-core, 1 processor: 2x 780MHz ARM Cortex-A7 (Dual-core) | Quad-core, 1 processor: 4x 1.4GHz ARM Cortex-A53 (Quad-core) |
| GPU graphical controller | PowerVR G6200 | ARM Mali-T720 MP1 (830MHz) |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Apple Watch 2 (Aluminum 38mm) | Galaxy J4 (SM-J400G/DS 16GB) | |
| RAM memory | 512MB LPDDR3 | 2GB LPDDR3 |
| Internal storage | 8GB (5GB available) | 16GB (10GB available) Flash (EEPROM) |
| External storage | Not supported | Until 256GB microSD, microSDXC (dedicated slot) |
📶 Mobile networks | ||
| Apple Watch 2 (Aluminum 38mm) | Galaxy J4 (SM-J400G/DS 16GB) | |
| Dual-SIM | Not supported | Not supported |
| SIM card | Not supported | 1 slot (Single-SIM) micro-SIM (3FF) |
| Maximum Download / Upload | feature not registered | 150/50 Mbps |
| Network technology | feature not registered | 2G, 3G, 4G |
| Frequency, bands | Expand band details Collapse details | |
| GSM MHz band | Not supported | Tri-Band 850/900/1800 |
| Primary 2G network | Not supported | GSM 850/900/1800 |
| Primary 3G network | Not supported | UMTS 850/900/2100 |
| Primary 4G network | Not supported | LTE Cat4 (Bands 1,3,5,7,8,28) TD-LTE (Bands 38,40) |
| Primary 5G network | Not supported | Not supported |
| Primary data network | Not supported | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, 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 | ||
| Apple Watch 2 (Aluminum 38mm) | Galaxy J4 (SM-J400G/DS 16GB) | |
| Back camera (main camera) | Not supported | 13 megapixels |
| 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 | 28mm lens |
| 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 | ||
| Apple Watch 2 (Aluminum 38mm) | Galaxy J4 (SM-J400G/DS 16GB) | |
| Front camera (secondary) | Not supported | 5 megapixels |
| Front camera resolution | Not supported | 2560x1920 pixels |
| Video recording (secondary) | Not supported | HD (1280x720) |
| Front flash | Not supported | LED |
| 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 |
🔉 Sound and multimedia | ||
| Apple Watch 2 (Aluminum 38mm) | Galaxy J4 (SM-J400G/DS 16GB) | |
| Loudspeaker | Supported | Supported |
| Active noise cancellation | Not supported | Not supported |
| Radio | Not supported | FM |
| TV | Not supported | Not supported |
| Video formats | MP4, H.264, H.263 | MP4, H.264, H.263, MKV, WMV |
| Audio formats | MP3, WAV, eAAC+, FLAC | MP3, OGG, eAAC+, FLAC |
🔌 Connectivity | ||
| Apple Watch 2 (Aluminum 38mm) | Galaxy J4 (SM-J400G/DS 16GB) | |
| 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 | 4.0 + A2DP | 4.2 + 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, BeiDou |
| NFC | Supported | Not supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Apple Watch 2 (Aluminum 38mm) | Galaxy J4 (SM-J400G/DS 16GB) | |
| Sensors | Accelerometer Ambient light sensor Gyroscope Heart rate Pedometer | Accelerometer Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Apple Watch 2 (Aluminum 38mm) | Galaxy J4 (SM-J400G/DS 16GB) | |
| Battery type | Li-Ion: lithium-ion (Non removable) | Li-Ion: lithium-ion (Removable) |
| Battery capacity | 273 mAh | 3000 mAh |
| Charger, watts | Wired charging | Wired charging |
| Inductive / wireless charging | Magnetic charging (dock) | feature not registered |
| Talk time autonomy | 18 hours | 20 hours |
| Standby | feature not registered | feature not registered |
➕ Other features | ||
| Apple Watch 2 (Aluminum 38mm) | Galaxy J4 (SM-J400G/DS 16GB) | |
| Call control | Not supported | Voice dialing, Voice recorder |
| Messaging | SMS, E-mail | SMS (T9), MMS, E-mail, Push mail |
| Hands-free calling | Supported | Supported |
| Video calling | Not supported | Supported |
| Ringtones | feature not registered | Polyphonic and customized |
| Web browser | Not supported | HTML, XHTML, HTML5 |
| Antenna | Not supported | Internal antenna |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | • Colors: Space gray, Gold, Rose gold, Silver • Sport or woven nylon bands • 1000 nits screen • 3D Touch display • Siri • Requires an iPhone 5s/iOS 11 or later | • Colors: Black, Gold, Purple |
☢️ Radiation rate | ||
| Apple Watch 2 (Aluminum 38mm) | Galaxy J4 (SM-J400G/DS 16GB) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | feature not registered |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | 0.356W/kg (head), 1.492W/kg (body) |