Tips for iPhone keyboard hiding include:
1.Long press the small ball in the lower left corner to switch between functions such as keyboard and one-handed input.
2.Long press the finals on the keyboard, and the phonetic transcription appears on the finals, which is suitable for playing pinyin.
3.A light and long press on a number will bring up other formats of the number, and a light and long press on a punctuation mark will also appear in other symbols for that punctuation.
4.Hold down the spacebar to move the cursor to pinpoint a word for modification.
5.When you enter a large paragraph of text and want to delete it, you can shake the phone and click Undo to delete it; Shake it again, click Redo, and you can recover the deleted text again.
6.Zoom out the keyboard: After opening the keyboard, press and hold the globe icon to zoom out to the left or right to make it easier to type with one hand.
7.Keyboard to trackpad: Under the symbol of the Chinese input interface or the English input interface, long press any key or blank key of the keyboard to turn the keyboard into a trackpad, which is convenient to quickly slide to the modified paragraph; If you press your finger long without leaving the screen, you can select the passage in reverse white, which is convenient for editing options such as copying and pasting.
8.Restore Input: If you accidentally delete the typed text or mess up the typesetting, as long as you pick up the phone and shake it twice, the "Restore Input" option will run out, and press Restore to restore the original state.
9.More special symbols: When you find that punctuation marks are not enough, under the Chinese input page, open the symbol interface, long press Arabic numerals or punctuation marks, and other corresponding more special symbols will appear for selection.
The above tips are for reference only, for more details, it is recommended to consult Apple official staff or check the relevant forums.