Samsung Galaxy J3 2018 (SM-J337V) vs LG Harmony (M257)
Side by side comparison between Samsung Galaxy J3 (2018) vs LG Harmony phones, differences, pros, cons and full specifications. What's the better?
,
vs
5.3"
IPS
IPS
720x1280
8
MP
MP
5mp
1.5GB
RAM
RAM
Quad-core
2800
mAh
mAh
(Removable)
What's the better phone? LG Harmony (M257)
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!
6 Advantages 
8 Advantages | 28 Common items in both devices |
| 16GB (9GB available) |
| Plastic body, glass front |
| TFT IPS LCD |
| 16 million |
| 720x1280 pixels |
| (back) 8MP |
| LED flash |
| +21 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 J3 2018 (SM-J337V) | LG Harmony (M257) | |
| Model | Galaxy J3 2018 (SM-J337V) | Harmony (M257) |
| Other model names | Verizon Galaxy J3 (2018) SM-J337VZSPVZW, Galaxy J3 3rd Gen | Cricket LG Harmony, LG K20 Plus, LG-M257, LGM257 |
| Country or region available |  USA | USA |
| Brand | Samsung | LG |
| Release date | 5/1/2018 | 2/1/2017 |
| Depth | 9 millimeters (0.35 inches) | 8 millimeters (0.31 inches) |
| Size (width x height) | 70.2 x 142.8 millimeters (2.76 x 5.62 in) | 75.29 x 148.7 millimeters (2.96 x 5.85 in) |
| Weight | 152 grams (5.32 ounces) | 142 grams (4.97 ounces) |
| Build, materials | Plastic body, glass front | Plastic body, glass front |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| Galaxy J3 2018 (SM-J337V) | LG Harmony (M257) | |
| Display type | TFT IPS LCD | TFT IPS LCD |
| Screen size | 5" inches | 5.3" inches |
| Screen-to-body ratio | ~68.8% (screen-to-body ratio) | ~69.2% (screen-to-body ratio) |
| Display resolution | 720x1280 pixels | 720x1280 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 294 PPI | 277 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Not supported | Not supported |
| Refresh rate | feature not registered | feature not registered |
| Display features | feature not registered | feature not registered |
🤖 Operating System | ||
| Galaxy J3 2018 (SM-J337V) | LG Harmony (M257) | |
| System version | Android 8.0 Oreo | Android 7.0 Nougat |
| Firmware update | feature not registered | feature not registered |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| Galaxy J3 2018 (SM-J337V) | LG Harmony (M257) | |
| Chipset | 64bit: Samsung Exynos 7570 (14nm) | 64bit: Qualcomm Snapdragon 425 MSM8917 (28nm) |
| CPU | Quad-core, 1 processor: 4x 1.4GHz ARM Cortex-A53 (Quad-core) | Quad-core, 1 processor: 4x 1.4GHz ARM Cortex-A53 (Quad-core) |
| GPU graphical controller | ARM Mali-T720 MP1 (830MHz) | Qualcomm Adreno 308 500Mhz |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Galaxy J3 2018 (SM-J337V) | LG Harmony (M257) | |
| RAM memory | 2GB LPDDR3 | 1.5GB LPDDR3 |
| Internal storage | 16GB (9GB available) eMMC 5.0 | 16GB (9GB available) |
| External storage | Until 512GB microSD, microSDXC (dedicated slot) | Until 256GB microSD, microSDXC (dedicated slot) |
📶 Mobile networks | ||
| Galaxy J3 2018 (SM-J337V) | LG Harmony (M257) | |
| Dual-SIM | Not supported | Not supported |
| SIM card | 1 slot (Single-SIM) nano-SIM (4FF) | 1 slot (Single-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 150/50 Mbps | 300/50 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 | CDMA 800/1900, GSM 850/900/1800/1900 | GSM 850/900/1800/1900 |
| Primary 3G network | CDMA2000 1xEV-DO UMTS 850/1900 | UMTS 850/1700/1900 |
| Primary 4G network | LTE Cat4 (Bands 2, 4, 5, 13) | LTE Cat6 700/850/1700/1900 (Bands 2,4,5,12) |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, HSDPA, HSUPA, HSPA+, LTE | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE, LTE-A |
| 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 J3 2018 (SM-J337V) | LG Harmony (M257) | |
| Back camera (main camera) | 8 megapixels | 8 megapixels |
| Main camera resolution | 3264x2448 pixels | 3264x2448 pixels |
| Video recording (primary) | Full HD (1920x1080) 30 fps | Full HD (1920x1080) 30 fps |
| Flash | LED flash | 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 | 1.12µm pixel |
| 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 J3 2018 (SM-J337V) | LG Harmony (M257) | |
| Front camera (secondary) | 5 megapixels | 5 megapixels |
| Front camera resolution | 2560x1920 pixels | 2560x1920 pixels |
| Video recording (secondary) | Full HD (1920x1080) | Full HD (1920x1080) |
| Front flash | Not supported | Not supported |
| Focal aperture | f/2.2 (aperture) | f/2.4 (aperture) |
| Focal length | feature not registered | feature not registered |
| Sensor size | feature not registered | feature not registered |
| Pixel size | feature not registered | 1.12µm pixel |
🔉 Sound and multimedia | ||
| Galaxy J3 2018 (SM-J337V) | LG Harmony (M257) | |
| Loudspeaker | Supported | 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, XviD, MKV |
| Audio formats | MP3, WAV, WMA, eAAC+, FLAC | MP3, WAV, WMA, eAAC+, FLAC |
🔌 Connectivity | ||
| Galaxy J3 2018 (SM-J337V) | LG Harmony (M257) | |
| 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 | 4.2 + A2DP | 4.2 + A2DP |
| WiFi | 802.11 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot | 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 | Not supported | Supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Galaxy J3 2018 (SM-J337V) | LG Harmony (M257) | |
| Sensors | Accelerometer Compass Gyroscope Proximity sensor | Accelerometer Ambient light sensor Compass Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Galaxy J3 2018 (SM-J337V) | LG Harmony (M257) | |
| Battery type | Li-Ion: lithium-ion (Removable) | Li-Ion: lithium-ion (Removable) |
| Battery capacity | 2600 mAh | 2800 mAh |
| Charger, watts | Wired charging | Wired charging |
| Inductive / wireless charging | feature not registered | feature not registered |
| Talk time autonomy | 29 hours (1.2 days) | 14 hours |
| Standby | 228 hours (9.5 days) | 350 hours (14.6 days) |
➕ Other features | ||
| Galaxy J3 2018 (SM-J337V) | LG Harmony (M257) | |
| 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: Blue | • Colors: Black • 2.5D Arc Glass screen • LG UX 5.0 • Wide-angle 120° front camera • KnockOn, Knock Code • VoLTE |
☢️ Radiation rate | ||
| Galaxy J3 2018 (SM-J337V) | LG Harmony (M257) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | 1.14W/kg (head), 1.59W/kg (body) | feature not registered |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | feature not registered |