Apple's mobile phone has no up, down, left and right keys. How to break lines or modify typing?

Hello, according to your question, my answer is:

You can click on the location you want to modify with your finger, because Apple's mobile phone comes with a touch screen, and clicking with your finger will trigger its operation.

You can use the spaces and enter on the mobile phone keyboard to wrap lines, change spaces, change formats and modify.

Click the space and enter of the virtual keyboard on the screen of the mobile phone.

How to package the iphone input method?

Iphone's own input method must have a line break. Can you see that when editing a short message, there will be a line break option in the lower right corner of the input method? No matter you download Baidu or sogou input method, there will be broken lines.