The SMS ringtone in Huawei u9508 mobile phone suddenly can't set local music. How to solve it? . urgent

You can use a custom ringtone, but it is more troublesome.

Create a media folder in the root directory of SD card, a ringtone folder in the media, a notification folder in ringtones, an alarm folder in notifications, and put your favorite ringtones in the alarm folder. So you can see your saved ringtones in the notification ringtone settings.

I hope I can help you!