To setup Gmail account on iOS device then start by proceeding to settings > passwords and accounts and then choose to add account. From the available list of email providers, you need to choose Google. Here, click to continue and new pop-up screen will appear, enter the email and click to next. If you do not have Gmail account then click to create account. Now, enter the password and choose next. With this, you will be navigated to the Gmail settings and ensure that the toggle next to Mail is switched on. With this, you can smoothly know how to create a Gmail account on iPhone device.