To change Siri’s name on the iPhone, you will have to download & install the iOS 18 Public Beta first. Once installed, follow these simple steps to swap out the name Siri with a custom phrase.

  • With iOS 18 installed on your iPhone, launch the Settings app.
  •  When the Settings app opens, navigate to the Accessibility.
  • Scroll down to the Speech section and tap on Vocal Shortcuts.
  •  On the Set Up Vocal Shortcuts screen, tap Continue.
  • On the Choose Action screen, select Siri in the System section.
  •  You will be asked to set a custom phrase to launch Siri. Enter any speakable phrase.
  •  You will be asked to repeat the phrase three times.
  • On the Action is Ready screen, tap Continue