How to set nine-key pinyin for iPhone

1. Open the "Settings" interface of the phone.

2. Open the General column.

3. Open the keyboard dialog box.

4. Click "Keyboard" in the page to enter the setting interface.

5. Enter the column of "Simplified Chinese Characters-Pinyin".

6. Select "Jiugongge" to complete the setting.

7. When you return to the SMS interface, you can find that the input mode has become a nine-square grid.