How do I send a text message after I type it?

Android users

Press the enter key ⏎ in the bottom right of the on-screen keyboard.

If you don't see the enter key ⏎, but a key with an emoji on it:  , you can try pressing the shift key:  - the emoji key should then change into the enter key ⏎.

Apple/iOS users

Simply press the "Send" button in the bottom right of the on-screen keyboard.