Can I set the background picture of Apple SMS?

Mobile phone jailbreak comes first.

Then download and install winterboard and Chinese package in cydia.

Install ifunbox on the computer side.

Connect your mobile phone to your computer, open ifunbox, and then create a new folder under the mobile phone/library/theme directory, which can be named at will. Name the required background picture (size 960X960, file format png) as SMSBackground@2x.png and upload it to this folder.

Finally, check this folder in the mobile phone WB.

Background picture: a scene that sets off the main things in pictures and photography. A set in a stage or movie. A historical situation or realistic environment that affects people and things.

Ke Yan's "Chasing Beauty, Blooming Flowers and Fading Flowers": "The picture shows a girl who is meditating, and the extremely bright background sets off an image of bowing her head." Preface to Duanmu Hongliang's Selected Novels: "I can't remember where this photo was taken and what the background was at that time, so I can't answer it."