Your Android Smart Phone comes with a default e-mail signature already set up. It usually says something like “Sent from my Android Smart Phone”. You will want to change the default signature to something similar to the signature you use in your e-mail on your computer. The easiest way to do this is to send an e-mail to yourself and copy and paste that signature onto your device. The process may vary slightly depending on the Model of your Android phone, but this tutorial will point you in the right direction.