LPDDR4 stands for Low Power Double Data Rate 4, a type of memory used primarily in mobile devices like smartphones and tablets. It is designed to consume less power while providing high-speed data transfer, which helps extend battery life and improve overall performance. This memory technology allows for faster processing and multitasking capabilities, making it ideal for applications that require quick access to data. LPDDR4 supports higher bandwidth compared to its predecessor, LPDDR3, enabling smoother operation of demanding tasks such as gaming and video playback.