What do you mean? It's already on iOS. Do you mean integration where Signal could integrate the SMS messaging (or similar functions)? Just taking a stab in the

What do you mean? It's already on iOS. Do you mean integration where Signal could integrate the SMS messaging (or similar functions)? Just taking a stab in the dark, but that's not (afaik) something iOS allows. Edit: Duh, you mean to pair it with like you do now via QR code from an Android device. Sorry, gotcha.