If you would like to use the phone symbol in a document such as Word, e-mail, editor etc., then it is recommended to use the correct Unicode. Why? The following three symbols ✆☎☏ have been included in Unicode version 1.1 since May 1993. Thus, any software that supports Unicode should recognize these characters correctly.
And so you create the above phone icons:
- ✆ -> U + 2706
- ☎ -> U + 260E
- ☏ -> U + 260F
For example, to use them in Word, just copy them from the text above. Otherwise you would have to open the special character table in the software and then search for the corresponding special character.