How to set the ringtone for Samsung a8?

Dear Samsung users, there are two situations in which the ringtone can't be set on the mobile phone: 1) If your Samsung A8 mobile phone can't set the ringtone, suggestions are: 1. Try setting the ringtone again, and go to Settings-Sound-Ringtone (customized ringtone: create a new folder ringtone on SD card, put songs in this folder, and set-Sound-Volume-Ringtone) 2. Method of setting ringtone: setting-sound-ringtone -SIM card 1/SIM card 2- device ringtone If the above method cannot be set, 1. Turn on the music with the music player that comes with the mobile phone, and press and hold the music to set it as ringtone. 2. If you still can't set it, please try to open Settings-Application Manager-Menu Key-Reset Application Preferences. 3. Back up the important data of the mobile phone and restore the factory settings: Settings-Reset/Privacy/Personal-Restore the factory settings. If the problem still exists after the above operation, it is recommended that you bring the purchase invoice, three-guarantee certificate and mobile phone to the local Samsung service center for inspection by engineers. 2) If Samsung A8 mobile phone can't set SMS ringtone, I suggest you: 1. Check whether the SMS ringtone can be replaced. 2. If the system SMS ringtone can be clicked, please set the information in the SMS-click the menu key-(notify)-select the ringtone to try. 3. If the system's own ringtone cannot be set, please uninstall the recently installed third-party software. 4. Back up the data, and then try to restore the factory settings. If the problem still exists, it is recommended that you take the purchase invoice, maintenance card and mobile phone to the local Samsung service center for professional engineers to help you test.