The LG G5 is an Android smartphone developed by LG Electronics as part of the LG G series. It was announced during Mobile World Congress as the successor to the 2015 LG G4. The G5 is distinguished from its predecessors by its aluminum chassis and a focus on modularity; the lower housing, which holds the user-replaceable battery, can be slid from the bottom of the device, and replaced by alternative add-on modules that provide additional functions. A camera grip and a high-fidelity audio module with DAC were available. A lower-spec variation, dubbed the LG G5 SE, was sold in some markets.