AT&T USA network provider released Android 4.4.2 Kitkat update for Galaxy S4 I337 users. Samsung Galaxy S4 device firmware update file can be downloaded with Wi-Fi network only. The update File size varies from 412 MB to 842 MB. The Android Kitkat 4.4.2 update will add more improvements like Galaxy Gear Watch compatibility, Drag and Drop to uninstall applications, Call reliability improvements etc. Before upgrading to Kitkat version the user want to back up their applications, multimedia files to PC or SD card. AT&T users will receive an automatic firmware update notification to download the file. After reaching the maximum postpone, the update file will be automatically downloaded and install on your device. AT&T users can manually check software update by the following method: Settings -> About Device -> Software Update -> Check for Updates.