LeEco Le S3 (X522) vs LG Harmony (M257)
Side by side comparison between LeEco Le S3 vs LG Harmony phones, differences, pros, cons and full specifications. What's the better?
,
5.5"
IPS
IPS
1080x1920
16
MP
MP
8mp
3GB
RAM
RAM
Octa-core
3000
mAh
mAh
(Non removable)
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? LeEco Le S3 (X522)
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 
9 Advantages | 17 Common items in both devices |
| TFT IPS LCD |
| 16 million |
| Only digital zoom |
| PDAF: phase detection autofocus / Autofocus |
| EIS: Digital stabilization |
| HDR photo only main camera |
| 4G LTE-A |
| +10 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 | ||
| LeEco Le S3 (X522) | LG Harmony (M257) | |
| Model | LeEco Le S3 (X522) | Harmony (M257) |
| Other model names | LeEco S3 X522 AM, Letv LEX522, LeEco X522 3GB RAM | Cricket LG Harmony, LG K20 Plus, LG-M257, LGM257 |
| Country or region available |   Canada, USA | USA |
| Brand | LeEco | LG |
| Release date | 11/1/2016 | 2/1/2017 |
| Depth | 7.5 millimeters (0.3 inches) | 8 millimeters (0.31 inches) |
| Size (width x height) | 74.2 x 151.1 millimeters (2.92 x 5.95 in) | 75.29 x 148.7 millimeters (2.96 x 5.85 in) |
| Weight | 153 grams (5.36 ounces) | 142 grams (4.97 ounces) |
| Build, materials | Aluminum body, glass front | Plastic body, glass front |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| LeEco Le S3 (X522) | LG Harmony (M257) | |
| Display type | TFT IPS LCD | TFT IPS LCD |
| Screen size | 5.5" inches | 5.3" inches |
| Screen-to-body ratio | ~74.4% (screen-to-body ratio) | ~69.2% (screen-to-body ratio) |
| Display resolution | 1080x1920 pixels (16:9) | 720x1280 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 401 PPI | 277 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass 3 | Not supported |
| Refresh rate | 60Hz | feature not registered |
| Display features | Not supported | feature not registered |
🤖 Operating System | ||
| LeEco Le S3 (X522) | LG Harmony (M257) | |
| System version | Android 6.0 Marshmallow | Android 7.0 Nougat |
| Firmware update | feature not registered | feature not registered |
| User Interface | eUI 5.8 | feature not registered |
⚙️ Processor | ||
| LeEco Le S3 (X522) | LG Harmony (M257) | |
| Chipset | 64bit: Qualcomm Snapdragon 652 MSM8976 (28nm) | 64bit: Qualcomm Snapdragon 425 MSM8917 (28nm) |
| CPU | Octa-core, 2 processors: 4x 1.8GHz ARM Cortex-A72 (Quad-core) 4x 1.4GHz ARM Cortex-A53 (Quad-core) | Quad-core, 1 processor: 4x 1.4GHz ARM Cortex-A53 (Quad-core) |
| GPU graphical controller | Qualcomm Adreno 510 600Mhz | Qualcomm Adreno 308 500Mhz |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| LeEco Le S3 (X522) | LG Harmony (M257) | |
| RAM memory | 3GB LPDDR3 | 1.5GB LPDDR3 |
| Internal storage | 32GB (22GB available) | 16GB (9GB available) |
| External storage | Not supported | Until 256GB microSD, microSDXC (dedicated slot) |
📶 Mobile networks | ||
| LeEco Le S3 (X522) | LG Harmony (M257) | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card | Not supported |
| SIM card | 2 slots (Dual-SIM) nano-SIM (4FF) | 1 slot (Single-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 300/50 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 | GSM 850/900/1800/1900 | GSM 850/900/1800/1900 |
| Primary 3G network | UMTS 850/1700/1900/2100 | UMTS 850/1700/1900 |
| Primary 4G network | LTE Cat6 (1, 2, 3, 4, 5, 7, 8, 12, 17) | LTE Cat6 700/850/1700/1900 (Bands 2,4,5,12) |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE, LTE-A | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE, LTE-A |
| Secondary 2G network | GSM 850/900/1800/1900 | Not supported |
| Secondary 3G network | Not supported | Not supported |
| Secondary 4G network | Not supported | Not supported |
| Secondary data network | GPRS, EDGE | Not supported |
📷 Camera | ||
| LeEco Le S3 (X522) | LG Harmony (M257) | |
| Back camera (main camera) | 16 megapixels | 8 megapixels |
| Main camera resolution | 4608x3456 pixels | 3264x2448 pixels |
| Video recording (primary) | 4K UHD (3840x2160) 30 fps | Full HD (1920x1080) 30 fps |
| Flash | Dual-LED flash | 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 | 1.12µm pixel |
| Autofocus | PDAF: phase detection 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 | 1080p@30fps 720p@120fps | feature not registered |
📸 Front camera | ||
| LeEco Le S3 (X522) | LG Harmony (M257) | |
| Front camera (secondary) | 8 megapixels | 5 megapixels |
| Front camera resolution | 3264x2448 pixels | 2560x1920 pixels |
| Video recording (secondary) | HD (1280x720) | Full HD (1920x1080) |
| Front flash | Not supported | Not supported |
| Focal aperture | feature not registered | 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 | ||
| LeEco Le S3 (X522) | LG Harmony (M257) | |
| Loudspeaker | Mono sound (not stereo) Dolby Atmos | Supported |
| Active noise cancellation | 2 microphones or more | 2 microphones or more |
| Radio | Not supported | FM (RDS) |
| TV | Not supported | Not supported |
| Video formats | MP4, H.265, H.264, H.263, XviD | MP4, H.264, H.263, XviD, MKV |
| Audio formats | MP3, WAV, eAAC+, FLAC | MP3, WAV, WMA, eAAC+, FLAC |
🔌 Connectivity | ||
| LeEco Le S3 (X522) | LG Harmony (M257) | |
| USB | USB 2.0 Type-C reversible connector | MicroUSB 2.0, USB OTG On-The-Go |
| Audio output | Type-C reversible connector | 3.5mm jack |
| TV output | Not supported | Not supported |
| Bluetooth | 4.1 + A2DP | 4.2 + A2DP |
| WiFi | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi hotspot | 802.11 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot |
| DLNA | Not supported | Not supported |
| GPS | A-GPS, GeoTagging | A-GPS, GeoTagging, GLONASS |
| NFC | Not supported | Supported |
| Infrared port | Supported | Not supported |
🧭 Sensors | ||
| LeEco Le S3 (X522) | LG Harmony (M257) | |
| Sensors | Accelerometer Ambient light sensor Compass Fingerprint sensor Hall effect Proximity sensor | Accelerometer Ambient light sensor Compass Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| LeEco Le S3 (X522) | LG Harmony (M257) | |
| Battery type | Li-Ion: lithium-ion (Non removable) | Li-Ion: lithium-ion (Removable) |
| Battery capacity | 3000 mAh | 2800 mAh |
| Charger, watts | 18W Wired fast charging Quick Charge 3 | Wired charging |
| Inductive / wireless charging | Not supported | feature not registered |
| Talk time autonomy | feature not registered | 14 hours |
| Standby | feature not registered | 350 hours (14.6 days) |
➕ Other features | ||
| LeEco Le S3 (X522) | 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: Gray, Gold, Rose Gold | • Colors: Black • 2.5D Arc Glass screen • LG UX 5.0 • Wide-angle 120° front camera • KnockOn, Knock Code • VoLTE |
☢️ Radiation rate | ||
| LeEco Le S3 (X522) | LG Harmony (M257) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | feature not registered |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | feature not registered |