On Android, you can get started with text expansion with Texpand . The setup is as easy as can be — just tap the plus button in the bottom right corner (as with other Material Design apps) and select the label and its full phrase. For example, you can enter «@@» as a shortcut for your email address, or «#cell» for your mobile phone number.
You can also set several options, including if you want the phrase to expand within words or just by itself. Texpand also has a popup when you start typing something close to a trigger phrase, so you don’t have to remember them exactly. You can exclude certain applications from text disclosure if you wish.