How to set the SMS ringtone of iphone6 plus?

Iphone6 plus SMS ringtone setting steps are as follows:

1, turn on the phone-Settings-Sound; The following figure

2, turn on the sound-SMS ringtone; The following figure

3. Turn on SMS ringtone-select ringtone; draw

4. Choose a good ringtone. There is a "tick" symbol in front of the bell, which means the setting is successful. draw