This is the official Cricket LG Harmony (model:LG M257) User Manual in English and Spanish provided from the manufacture.
The new LG M257 smart phone is a variant of LG K10 2017 for Cricket Wireless. It is now available from Cricket as LG Harmony for $99.99.
Download LG Harmony (LG-M257) User Manual
LG Harmony (LG M257) Specs:
|Network frequency||GSM 850/900/1800/1900 MHz|
|UMTS Bands 2/4/5|
|LTE Bands 2/4/5/12|
|Operating system||Android™ 7.0 (Nougat)|
|Display||5.3″ HD 1280 x 720|
|Processor||Qualcomm® MSM8917 1.4 GHz quad-core|
|Memory||1.5 GB RAM, up to 16 GB ROM (up to 8.9 GB usable)|
|microSD||support up to 2 TB|
|Rear camera||8 MP with Flash FHD video (1920 x 1080)|
|Front camera||5 MP with Auto Shot and Selfie Light FHD Video (1920 x 1080)|
|Dimensions||5.90 x 3.0 x 0.30 in.|
|Talk time||Up to 14 hours4|
|Standby time||Up to 350 hours4|
|Battery||2,800 mAh (removable)|
The LG Harmony M257 Smart phone also has a fingerprint scanner. The LG Harmony M257, LG MP260, LG TP260, LG M255 and LG M260 are exactly same device.
Please aware that all LG devices from AT&T and Cricket Wireless support software update via FOTA only. It means that You can not use LG bridge or LG mobile Support Tool to update your phone, and You can not download kdz firmware for LG M257 model with IMEI.
So, if you own LG Harmony M257 Smart phone, Please do not try to root or modify the OS of your LG M257 smart phone.