Select the picture you want to change and tap the Edit option. How to blur photos on iPhone using Snapseed Download Snapseed and open it on your iPhone. Find the image you want to edit or redact. Tap on Done. Blur The Background Of A Picture In Editing. Tap the Edit icon, then touch More icon (the ellipsis enclosed in a circle). Tap the screen to open your Photo library and choose a photo that you want to edit. Your photo will appear on the screen with a … Then tap Lens Blur. Tap Tools and scroll through the options. As you’ve discovered, taking photos with a blurred … Choose Markup from the pop-up menu. Swipe the lighting effects in the bottom part to choose the one you want. Open the Photos app on iPhone.