Iphone photos can be filtered by the following steps: 1. After opening the iphone, click on the photo to enter the photo page; 2. Select the photo that needs a filter, and click on the lower left corner of the photo; 3. Click the filter logo in the middle to enter the filter page; 4. Choose a filter according to your own preferences and save it; 5. Click the heart-shaped logo in the middle to add the picture to the collection, which can be found in the album collection. A hundredfold care, 10 satisfaction.