To use the "pixel eraser" feature on your iPhone, follow these steps:
1. Open the Photos app: Locate and tap on the Photos app from your home screen. The app icon resembles a multi-colored pinwheel.
2. Select the photo: Browse through your photo library and select the photo you want to edit. Tap on it to open it in full view.
3. Tap Edit: Once you have the photo open, tap on the Edit option located in the top-right corner of the screen. It appears as three horizontal sliders.
4. Choose Markup: Within the editing interface, you will see various editing tools at the bottom of the screen. Swipe left or right until you find the Markup option and tap on it. The Markup icon typically resembles a pen tip.
5. Access the pixel eraser: After tapping Markup, you will see additional tools at the bottom of the screen. Locate and tap on the "+" icon to reveal more Markup tools. One of those tools should be the pixel eraser. Depending on the iOS version and your device, it may be represented by an icon resembling an eraser or might have the term "Pixel Eraser" written alongside the tool.
6. Erase unwanted pixels: With the pixel eraser tool activated, use your finger or Apple Pencil (if your device supports it) to touch and erase the pixels or areas you want to remove. You can adjust the size of the eraser brush by utilizing the slider or pinch-to-zoom gesture for precision.
7. Apply and save changes: Once you have erased the desired pixels, tap on the Done or Save button (usually located in the top-right or bottom-right corner) to apply the changes and save the edited photo.
Please note that the availability and interface of the pixel eraser tool may vary slightly depending on the iOS version and your specific iPhone model. It is recommended to keep your iOS up to date to access the latest features and improvements.