Question

how to use this symbol in mobile keyboard ​

Answer 1

Answer:

Most Android phones feature alternative character keyboards. To access these special keyboards, tap the symbol or numeric key, such as the ? 1J key. The number and variety of special character keyboards varies from phone to phone.

Explanation:

If you have an Android, there's an easier option. Holding down the period key will reveal more symbols, including a question mark and dollar sign, on the main keyboard. (On your computer keyboard, find out what those F1–F12 keys really do.