How do I unregister or delete my account on iOS? If you no longer have Signal installed, you can unregister here. You can also unregister within the app: Open Signal. Go to Settings . Tap the red Delete Account button. Tap Proceed to confirm. Learn how to unregister on Android. Related articles How do I unregister or delete my account on Android? What do I do if I get a new number? Can I use multiple devices? How do I delete messages or alerts on Signal Android? Can I send SMS through Signal on my iPhone?