style: Rearrange advice and add heading

Signed-off-by: redoomed1 <[email protected]>

Author: redoomed1

docs/os/ios-overview.md

@@ -208,20 +208,24 @@ Disable **Personalized Ads** if you don't want targeted ads. Select **Apple Adve
 
 Normal phone calls made with the Phone app through your carrier are not E2EE. Both FaceTime Video and FaceTime Audio calls are E2EE, or you can use [another app](../real-time-communication.md) like Signal.
 
-### Avoid Jailbreaking
+### Contact and Photo Permissions
 
-Jailbreaking an iPhone undermines its security and makes you vulnerable. Running untrusted, third-party software could cause your device to be infected with malware.
+When an app prompts you for access to your iPhone's photo library or address book, iOS provides you with options to limit what an app can access.
 
 ### Encrypted iMessage
 
 The color of the message bubble in the Messages app indicates whether your messages are E2EE or not. A blue bubble indicates that you're using iMessage with E2EE, while a green bubble indicates the other party is using the outdated SMS and MMS protocols. Currently, the only way to get E2EE in Messages is for both parties to be using iMessage on Apple devices.
 
-If either you or your messaging partner have iCloud Backup enabled without Advanced Data Protection, the encryption key will be stored on Apple's servers, meaning they can access your messages. Additionally, iMessage's key exchange is not as secure as alternative implementations, like Signal (which allows you to view the recipients key and verify by QR code), so it shouldn't be relied on for particularly sensitive communications.
+If either you or your messaging partner have iCloud Backup enabled without Advanced Data Protection, the encryption key will be stored on Apple's servers, meaning they can access your messages. Additionally, iMessage's key exchange is not as secure as alternative implementations like Signal's (which allows you to view the recipients key and verify by QR code), so it shouldn't be relied on for particularly sensitive communications.
 
 ### Blacking Out Faces/Information
 
 If you need to hide information in a photo, you can use Apple's built-in tools to do so. Open the photo you want to edit, press edit in the top right corner of the screen, then press the markup symbol at the top right. Press the plus at the bottom right of the screen, then press the rectangle icon. Now, you can place a rectangle anywhere on the image. Make sure to press the shape icon at the bottom left and select the filled-in rectangle. **Don't** use the highlighter to obfuscate information, because its opacity is not quite 100%.
 
+### Avoid Jailbreaking
+
+Jailbreaking an iPhone undermines its security and makes you vulnerable. Running untrusted, third-party software could cause your device to be infected with malware.
+
 ### iOS Betas
 
 Apple always makes beta versions of iOS available early for those that wish to help find and report bugs. We don't recommend installing beta software on your phone. Beta releases are potentially unstable and could have undiscovered security vulnerabilities.