India, Dec. 1 -- Apple still doesn't let users replace Siri as the default assistant on the iPhone, but there is a simple workaround that gives you instant access to ChatGPT through the Action button. If you have an iPhone 15 Pro or a newer Pro model, you can assign ChatGPT's voice mode to the Action button and launch it with a single long press.

This turns the Action button into a shortcut to a faster, more conversational assistant that many users find more capable than Siri.

Here's how to set it up.

Step 1: Install ChatGPT

Download the ChatGPT app from the App Store, then sign in or create a new account.

Step 2: Open iPhone Settings

Launch the Settings app on your iPhone.

Step 3: Go to the Action Button menu

Tap Action Button to...