Change signature in BB 10

How to change your email signature on BlackBerry 10

·         From within the Hub, tap the overflow icon (3 dots)
·         Tap Settings·         Tap Email Accounts·         Choose the account for which you want to change the signature

  Here you will see an option for Auto Signature. You can either toggle to turn it off, or simply edit it in the text box. When you're done, go back to save.