N900 can make digital calls, why can't it send digital messages?

Who said no? You can't enter numbers, can you? ! Click the second blue diagonal arrow on the left, and then press the number. If you want to enter a string of numbers, please click this key twice in succession (Note! Hurry up! Then it is locked, which means that all the blue words on the keyboard can be entered. After losing, you can press that key to continue typing other words! Xiao Jiu is very powerful! Ask if you don't understand.