You can find this LG Optimus L9 P769 (bundling with T-Mobile in US) in many others series name depend on the carrier and region. For example the LG Optimus L9 P760 (for global), for India named as LG Optimus L9 P765, LG Optimus L9 P768 (South America and Asian) although these version has larger screen size at 4.7-inch. Therefore, for some basic guidance available on this P769 would be the same with other Optimus L9 User Guide.
LG Optimus L9 P769 is a 4.5-inch touch bar/ touch-tablet smartphone (form factor design) runs on Android Operating System. The display uses IPS LCD capacitive touschreen at 960 x 540 pixels resolution with 16M colors. It’s acquired about 245 pixel density (ppi). It protected with Corning Gorilla Glass 2 for scratch resistant material.
But for the Optimus L9 P760 and its series (P768 / P765), speaking of the screen, We suggest you to have the IPS screen to be coated with screen protection (and the like) because this phone doesn’t seem protected with scratch resistant glass.