Apple iPhone - Tips and Tricks
Here are 5 iPhone features you may not know exist, along with steps to set them up.
1. Markup
Markup is a powerful tool you might not even realize is there. It lets you edit screenshots and photos, add signatures to PDFs or other documents, insert text, and draw on images.

To draw on photos:
- Open the photo and tap Edit, then the Markup button. It looks like a pencil inside a circle.
- Tap the Plus button to add Description, Text, Signature or Magnifier to zoom in.
- Once you’ve made your selection, tap Done, then tap Done again.

To sign a PDF and other documents:
- Open the document and tap Edit, then the Markup button.
- Tap the Add button to add Text or a Signature.
- Tap Done twice.

2. Check if a surface is level
Next time you’re hanging a frame, grab your iPhone instead of searching for a level. Here’s how it works:

- Open the pre-installed Measure app.
- Tap Level, then hold your iPhone against an object. Use it just as you would a normal level.
3. Flash notifications
Don’t want to miss a notification, but you need to keep quiet? Instead of vibrations and sounds, you can set your iPhone’s LED flash to blink when your phone is locked and silenced.

- Go to Settings > Accessibility > Audio/Visual.
- Toggle on LED Flash for Alerts.
You can then enable Flash on Silent if you want the LED to only flash when your iPhone is silenced.
4. Mute notifications for a conversation
The constant pings from group messages can be a little much. If you’re done with the conversation in a group message or need a break, give yourself the gift of silence:

- Touch and hold a conversation in your list of Messages.
- Tap Hide Alerts.
5. Undo typing with a shake
We all make mistakes when sending messages or entering text into notes or emails. You can highlight the incorrect text or hold down the delete button, but there’s an easier way.
Shake to Undo Typing
Shaking your phone will display an Undo Typing window with the option to Undo. Tap that and your words will disappear. Shake the phone again and select Redo Typing if you want them back.
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