DLNA enabled phones can be used as media servers, which enable you to access content from a TV, audio system and PC without using wires to connect the devices. Most importantly, there is no need to configure network settings, or synchronize content between DLNA devices. There are also Android DLNA remote control apps that can be used to control playback.
For your Android cell phone to work as a DLNA server, or remote control, it needs to have Wi-Fi and be a DLNA certified device. Here is a list of Android phones that are DLNA certified.