Why doesn't Apple's mobile phone use sogou input method to send short messages with the function of inserting numbers?

Hello, I'm glad to answer your question.

Enter sogou input method settings, thesaurus and passport management, then enter the address book thesaurus, and select Import Address Book thesaurus. If you are too lazy to import the address book thesaurus in the future, just check the box to automatically import the address book thesaurus, and then enter the contact name when sending a text message. At this time, a sign ℡ will appear in the upper right corner of your contact name, and long press Enter, which is the contact's communication method. Just select an insert! Or if pinyin input method is not installed, it can be realized by switching between two programs and copying and pasting. First, open the address book, find the contact to be added, enter the contact editing interface, click the house key to return to the desktop, and enter the SMS interface. When editing short messages to add address book information, press and hold the house to enter the open program, click the address book, press and hold Select Copy in the contact name column, and then press and hold the house building selection information in the information editing column. Follow this method.