Why is there a box outside the SMS bubble after my iphone beautifies the SMS interface?

Try to make your SMS bubble transparent. It's weird. How did you change the SMS wallpaper? Are you 3gs or 4?

But really, really, really funny SMS interface. O(∩_∩)O haha ~

I remember changing wallpaper with winter boards or something. That was a long time ago. . .

Hey, the mobile phone has been dead for a long time, and it's hard to remember that year. . .