The mobile phone suddenly appeared the sound of running water.

There are many factors that affect the failure of smart phones. Such as third-party software conflicts, viruses, excessive cache occupation, hardware and other problems will cause the crash phenomenon. I suggest you: 1. If an external SD card is plugged into the fuselage, take it out and test it. Eliminate the bad performance of SD card. 2. Uninstall the third-party software test before the crash to eliminate the incompatibility between the third-party software and the mobile phone. 3. Back up mobile phone data (phone book, SMS, multimedia files, etc.). ) and restore the factory settings. If the fault still exists, it is recommended that you bring the purchase invoice and maintenance card to the nearest Samsung service center for inspection and maintenance.