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LG Harmony M257 SPECS

Full specifications of the LG Harmony M257 phone, detailed technical information, specs, features, price, review. Everything about phone.

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LG Harmony M257

Good Android phone with 1.4Ghz Quad-Core processor provides good performance and great system execution of the LG Harmony M257.

With one SIM card slot, the LG Harmony M257 allows download up to 300 Mbps for internet browsing, but it also depends on the carrier.

Great connectivity of this device includes Bluetooth 4.2 version A2DP, WiFi 802.11 b/g/n (2.4Ghz) and NFC to make payments and allows connection to other devices.

Including the battery, the LG Harmony M257 phone has 142 grams and it's a very thin device, only 8 mm.

Model and physical featuresLG Harmony M257
BrandLG
ModelHarmony M257
Also known asCricket LG Harmony, K10 2017, LG K20 Plus, LG-M257, LGM257
Country or region where it's soldUSA
Release dateFebruary, 2017
Depth8 millimeters (0.31 inches)
Size (width x height)75.29 x 148.7 millimeters (2.96 x 5.85 in)
Weight142 grams (4.97 ounces)
Qwerty physical keyboardNot supported
AntennaInternal antenna
Build, materialsfeature not registered
Protection against water and othersNot supported
Operating system (OS)LG Harmony M257
Operating systemAndroid 7.0 Nougat
Firmware updatefeature not registered
HardwareLG Harmony M257
Architecture - Chipset64bit - Qualcomm Snapdragon 425 MSM8917 (28nm)
CPU processor1.4Ghz Quad-Core ARM Cortex-A53
GPU graphical controllerQualcomm Adreno 308 500Mhz
RAM memory1.5GB LPDDR3
Internal storage16GB (9GB user available)
External storageUntil 256GB microSD, microSDHC, microSDXC
(dedicated slot)
DisplayLG Harmony M257
Display typeTFT LCD IPS
Screen size5.3" inches
Screen-to-body ratio~69.2% (screen-to-body ratio)
TouchscreenCapacitive Multitouch
Display resolution720x1280 pixels
Pixel density (dot pitch)277 PPI
Colors16 million
Scratch-resistant glassNot supported
Mobile networks and dataLG Harmony M257
Dual-SIMNot supported
SIM card1 slot
nano-SIM (4FF)
GSM Mhz bandQuad-Band 850/900/1800/1900
Primary 2G networkGSM 850/900/1800/1900
Primary 3G networkUMTS 850/1700/1900
Primary 4G networkLTE Cat6 700/850/1700/1900 (Bands 2,4,5,12)
Primary data networkGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE, LTE-A
Secondary 2G networkNot supported
Secondary 3G networkNot supported
Secondary 4G networkNot supported
Secondary data networkNot supported
Maximum download/upload300/50 Mbps
Messaging and callingLG Harmony M257
MessagingSMS (T9), MMS, E-mail, Push mail
SpeakerphoneSupported
Video callingSupported
Call controlVoice dialing, Voice recorder
Primary camera / Back cameraLG Harmony M257
Main camera8 megapixels
Main camera resolution3264x2448 pixels
Video recording (primary)Full HD (1920x1080 pixels) 30 fps
FlashLED flash
Focal aperturef/2.2 (aperture)
Focal lengthfeature not registered
Sensor sizefeature not registered
Pixel size1.12µm pixel
AutofocusAutofocus
Touch focusSupported
Image stabilizationEIS: Digital stabilization
ZoomOnly digital zoom
Face/smile detectionFace detection, Smile detection
BSI sensorNot supported
HDRHDR photo only main camera
Front camera / Secondary cameraLG Harmony M257
Front camera5 megapixels
Front camera resolution2560x1920 pixels
Video recording (secondary)Full HD (1920x1080 pixels)
Front flashNot supported
Focal aperturef/2.4 (aperture)
Focal lengthfeature not registered
Sensor sizefeature not registered
Pixel size1.12µm pixel
MultimediaLG Harmony M257
RadioFM with RDS
TVNot supported
Video formatsMP4, H.264, H.263, XviD, MKV
Audio formatsMP3, WAV, WMA, eAAC+, FLAC
Connectivity and interfacesLG Harmony M257
USBMicroUSB 2.0
TV outputNot supported
Audio output3.5mm jack
Bluetooth4.2 version A2DP
WiFi802.11 b/g/n (2.4Ghz)
DLNANot supported
NFCSupported
GPSA-GPS, GeoTagging, GLONASS
Infrared portNot supported
Other functionsLG Harmony M257
Active noise cancellationSupported
Vibrating alertSupported
RingtonesPolyphonic and customized
Web browserHTML, XHTML, HTML5
Java / Flash playerNot supported
SensorsAccelerometer
Proximity
Compass
Ambient Light
Other features- Colors: Black
- USB OTG On-The-Go
- 2.5D Arc Glass screen
- LG UX 5.0
- Wide-angle 120° front camera
- KnockOn, Knock Code
- VoLTE
- WiFi direct, hotspot
Power supply and autonomyLG Harmony M257
Battery technologyLi-Ion (Removable)
Battery capacity2800 mAh
Battery model / charger (watts)feature not registered
Talk time840 minutes | 14 hours | 0.6 day
Standby21000 minutes | 350 hours | 14.6 days
Specific absorption rate (radiation)LG Harmony M257
SAR USA, Mexico, Colombiafeature not registered
SAR European Union, UKfeature not registered

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