OpenAI has an official ChatGPT app, which is by far the best way to access the chatbot from your iPhone or Android.

Use the Speech-to-Text Feature
Typing can be tedious, especially if you want a full-blown conversation with artificial intelligence. With the voice messaging or speech-to-text feature, you can converse with ChatGPT the whole day without typing. Like other Ai models it wont always be perfect at transcribing. But it’s very close.

Step 1: Head over to the App Store and search for ChatGPT — The official app by OpenAI and select Get to download and install it on your Phone.

Step 2: Once installed, open the ChatGPT app. The first time you use the app, you’ll need to either sign into an existing account or create a new one.

Step 4: If you’ve never used ChatGPT before, select one of the sign-in options to use your Apple ID, Google Play account, or sign up with an email address. When signing up for the first time, you’ll need to enter your details and verify your account.

Step 5: Once you’ve confirmed your mobile number, you’ll be taken back to the main chat screen.

Step 6: Select the Message field at the bottom to bring up the keyboard and begin typing a message to the chatbot as you would in most other messaging apps. Select the up arrow button to send your message to ChatGPT and wait for its response.