LG G3 Beat features a 5-inch IPS display offering 294ppi pixel density. The screen resolution has been dropped to 720×1280 pixels as compared to the QHD resolution of the LG G3. LG G3 Beat is powered by a 1.2GHz quad-core Snapdragon 400 processor clubbed with 2GB of RAM. It comes with 8GB of inbuilt storage with microSD card expansion and is backed by a 2540mAh battery. G3 Beat features an 8 MP rear camera with Laser Autofocus feature seen on the G3, while the front camera will be 1.3 MP.
LG G3 Beat is yet to receive official Marshmallow update. Till then you can try custom ROMs. CM 13 ROM running on Android 6.0.1 can be installed on LG G3 Beat. A detailed guide on how to install it is given below.