谢谢。不用告我了 查到了 我发上来给其他朋友们也学学。不过不知写啥好 选了三个星星加上去了

1. First, you can open Photos and find the image to which you want to add a text watermark.
2. Tap “Edit” to switch to iPhone’s photo editing page.
3. Tap the pencil icon in the top right to open the Markup page of the Photos watermark adder.
4. Then tap the “+” icon in the button right, and there will be a pop-up window.
5. Choose “Text” and enter all the text that you want to use as the watermarks for a photo. By the way, you can change the text color and size by zooming in and out of the text bubble.
6. Once you have watermarked photos as needed, you can tap “Done” to save your photos with text watermarks.