The input method of special symbol patterns is as follows:

Operating tool: vivo X9.

Operating system: Funtouch OS 7. 127.

Software: sogou input method v8.2

Step 1: First, open the mobile phone input method, as shown in the figure below.

Step 2: Enter the symbol list and slide the slider on the left down, as shown in the figure below.

Step 3: Find the "Special" symbol option and click Select, as shown in the figure below.

Step 4: Send the special symbol at last, as shown in the figure below.