Why can't I enable SMS?

Xiaomi mobile phone MIUI SMS can't be opened, prompting SMS to stop running. Handling method: 1, restart the phone; 2. Enter mobile phone settings-system application (this step was not available in the old version)-SMS-clear data -OK, clear cache -OK on the same page; 3. On the previous page, click Disable-OK, and then click Enable-OK; 4. If the above methods can't solve the problem, you can try to take over with a third-party SMS tool (Go SMS, Android SMS, etc.). ); 5. Back up the mobile phone data and restore the factory settings or send it for after-sales processing.