Thank you for being with Samsung and sharing your concern. We apologize for the inconvenience caused to you. We would like to inform you some steps :- 1) Utilization of maximum storage from internal memory, may hang your device. For that we recommend you to delete some of the downloaded data from your phone for better performance as internal space should be 20% free OR’ transfer data to SD Card via My Files. (Phone Application>>My Files>>Select Multimedia Data>>Press More>>Click Move>>Select Location of SD Card>>Click Move Here). 2) Menu> smart manager>clear ram. 3) Stop running application (Setting >>Application Manager>>Running>>Stop All Downloaded Application When Not Using). 4) Check all the applications are closed by using the Task Manager option. 5) Scan SD card and then check. 6) Software update handset (Setting>>About Device>>Software Update>>Update) update using 3G/4G or Wi-Fi connectivity. 7) Go to setting>General>Application Manager>All>Tap on 3 dots (right top) ‘Reset app preference’. Be sure to hit ♡ when you find an answer that works for you. For Further assistance, you can also connect us via Samsung Members web community by following mentioned url-https://community.samsungmembers.com/en_IN#/
