Iphone4 accidentally deleted the SMS handwriting input method. How can I retrieve the handwriting input method now?

Iphone4 accidentally deleted the SMS handwriting input method. You can retrieve handwriting input methods in the following ways:

1, enter phone settings-General-Multilingual environment-Keyboard, and select Simplified Chinese (handwriting).

2. Restore the phone to factory settings, and then the system will restore the deleted default settings, including handwriting input.