Firstly, open an app where you can use the device's keyboard. The degree symbol is located in the Icons section on the Android phone's keyboard. Place the cursor where you want to add the degree icon. Tap the text field to which you want to add the degree icon (for example, the text field in the Messages section). Then, click on the "?123" button. It is located on the bottom left of the keyboard. When clicked, icons and numbers appear on the keyboard. Touch the next Icons (=/<) button. On most Android phones, the icons are two pages. You will need to touch the button with mathematical symbols to move to the next page. On some Android phones, you need to click on ">" to move to the next page. Touch the degree symbol. A degree symbol will be added to the text field.