Why doesn't the SMS ring?

1. Try whether the volume is fully turned on first, and check how it is set in the settings;

2. Try to turn on the speaker during the call. Is there a sound? Otherwise, the speaker may be damaged. If there is sound, it is a system problem. Try to restore the system through itunes. (Pay attention to data backup to avoid data loss when restoring the system);

3. If the speaker is broken, the machine is licensed in Chinese mainland, and it can be replaced at an authorized repair point of Apple within the warranty period. Other machines (Hong Kong version, American version, etc. If they have a small ticket pass, they can guarantee it. If you don't repair at your own expense.

The answer is not easy, I hope I can help you, please help me adopt it if you are satisfied, thank you!