Snapchat's View in 3D feature allows you to bring your snaps to life by adding augmented reality (AR) elements to your photos and videos. To access the View in 3D button, follow these steps:

1. Open the Snapchat app and tap the camera icon to take a snap or select an existing photo from your camera roll.

2. Once you have taken or selected a photo, look for the smiley face icon that appears at the top of the screen. This is the Lens Carousel, where you can find various AR effects and features.

3. Swipe through the Lens Carousel until you see the '3D' or 'View in 3D' button. This button will typically look like a 3D cube or have '3D' written on it. Tap on the button to activate the View in 3D feature.

4. After tapping the View in 3D button, follow the on-screen instructions to interact with the AR elements and bring them into your snap. You may need to move your camera around to explore different angles and perspectives.

5. Once you have positioned the AR element in your snap, you can capture the photo or record a video to share with your friends and followers. The AR element will appear as part of your snap, adding an interactive and immersive touch to your content.

By following these simple steps, you can easily find and use the View in 3D button on Snapchat to enhance your snaps with AR elements. Whether you want to place a 3D object in your surroundings, add animated stickers, or try out fun visual effects, the View in 3D feature opens up a whole new world of creative possibilities for your snaps. Have fun experimenting with different AR elements and bringing your snaps to life in a unique and engaging way!