Provided is a user equipment (UE) including a storage, and a controller that may identify a first assembly file, among a plurality of assembly files of a first application, having a first usage frequency that is equal to or greater than a predetermined threshold, ahead-of-time (AOT) compile the first assembly file based on the first assembly file having the first usage frequency that is equal to or greater than the predetermined threshold, obtain a first compilation result based on AOT compiling the first assembly file, store the first compilation result in the storage, and execute the first application by using the first compilation result stored in the storage based on a request to execute the first application.