Switching between open apps on an iPhone without a home button can be accomplished using gestures on the iOS 16 operating system. Here's how you can do it:
1. Start by swiping up from the bottom of the screen and then pause in the middle of the screen. This will reveal the App Switcher interface.
2. Once the App Switcher interface is visible, you'll see a list of open app cards in a stacked arrangement. You can horizontally scroll through these app cards to find the app you wish to switch to.
3. To switch to a particular app, simply swipe either left or right on the app card to navigate through the different open apps. Keep swiping until you reach the desired app.
4. When you've found the app you want to switch to, lift your finger off the screen to open it. The app will then become active and accessible for you to use.
Alternatively, you can also use the following method to quickly switch between open apps without going through the App Switcher interface:
1. Place your finger towards the left or right edge of the screen (depending on your preference), and swipe to the right or left respectively.
2. By swiping from the edge of the screen towards the center, you'll be able to easily switch to the next or previous app without fully opening the App Switcher interface.
Keep in mind that these instructions are specific to the iOS 16 operating system and may differ if using an older version. It's always a good idea to keep your iPhone software up to date to take advantage of the latest features and optimizations.