When you need to type in symbol such as “?” or “@” with phone, you can the input method to "ABC" or "2ab" by pressing soft key, then press star (*) key on bottom left of the pad to select the symbol as you want.

| Yealink Star Key Symbols | |
| 1 | * |
| 2 | . |
| 3 | , |
| 4 | ' |
| 5 | ? |
| 6 | ! |
| 7 | \ |
| 8 | - |
| 9 | ( |
| 10 | ) |
| 11 | @ |
| 12 | / |
| 13 | : |
| 14 | _ |
| 15 | ; |
| 16 | + |
| 17 | & |
| 18 | % |
| 19 | = |
| 20 | < |
| 21 | > |
| 22 | £ |
| 23 | $ |
| 24 | ¥ |
| 25 | ¤ |
| 26 | [ |
| 27 | ] |
| 28 | { |
| 29 | } |
| 30 | ~ |
| 31 | ^ |
| 32 | ¡ |
| 33 | ¿ |
| 34 | § |
| 35 | # |
| 36 | " |
| 37 | | |