This is the official LG Risio 4 LMK300CMR User Manual in English and Spanish provided by the manufacture.
The office model name for the LG Risio 4 is LMK300CMR (aka LM-K300CMR, K300CMR).
According to our sources, LG Risio 4 a variant of the LG K31 LMK300 designed for Cricket Wireless.
The LG Riso 4 is now available for purchase at Cricket Wireless.
if you want to get to know the device better before making a purchase decision, You can download and read LG Risio 4 User Manual from the below links.
Download LG Risio 4 User Manual
The LG Harmony 4 features Android 10 OS, a 5.7” HD+ FullVision Display, MediaTek MT6762 up to 2.0 GHz Octa-Core CPU, 2GB of RAM, 16 GB of internal storage, and a 3000mAh non-removable battery. It Preloaded with Cricket Wireless Apps, such as My Cricket, Cricket Visual Voicemail, and the scoop.
if you want to check the LG Risio 4 hardware Specs in detail, please download LG Risio 4 Specs sheet in PDF here.
For your information, the LG Risio 4 comes with Android 10 OS out of the box, It supports software update via OTA only.
There is no way to download the LG Harmony® 4 stock kdz firmware from the LG server. The phone does not support LG Bridge either.