doc(ios): add privacy manifest guide

README.md

@@ -305,3 +305,47 @@ var boolean = device.isiOSAppOnMac;
 ### Supported Platforms
 
 - iOS
+
+---
+
+## iOS Privacy Manifest
+
+As of May 1, 2024, Apple requires a privacy manifest file to be created for apps and third-party SDKs. The purpose of the privacy manifest file is to explain the data being collected and the reasons for the required APIs it uses. Starting with `[email protected]`, APIs are available for configuring the privacy manifest file from `config.xml`.
+
+This plugin comes pre-bundled with a `PrivacyInfo.xcprivacy` file that contains the list of APIs it uses and the reasons for using them.
+
+However, as an app developer, it will be your responsibility to identify additional information explaining what your app does with that data.
+
+In this case, you will need to review the "[Describing data use in privacy manifests](https://developer.apple.com/documentation/bundleresources/privacy_manifest_files/describing_data_use_in_privacy_manifests)" to understand the list of known `NSPrivacyCollectedDataTypes` and `NSPrivacyCollectedDataTypePurposes`.
+
+For example, with this plugin, you may collect the device ID for app functionality or analytics. In the case of app functionality, you would write the following in `config.xml`:
+
+```xml
+<platform name="ios">
+    <privacy-manifest>
+        <key>NSPrivacyTracking</key>
+        <false/>
+        <key>NSPrivacyTrackingDomains</key>
+        <array/>
+        <key>NSPrivacyAccessedAPITypes</key>
+        <array/>
+        <key>NSPrivacyCollectedDataTypes</key>
+        <array>
+            <dict>
+                <key>NSPrivacyCollectedDataType</key>
+                <string>NSPrivacyCollectedDataTypeDeviceID</string>
+                <key>NSPrivacyCollectedDataTypeLinked</key>
+                <false/>
+                <key>NSPrivacyCollectedDataTypeTracking</key>
+                <false/>
+                <key>NSPrivacyCollectedDataTypePurposes</key>
+                <array>
+                    <string>NSPrivacyCollectedDataTypePurposeAppFunctionality</string>
+                </array>
+            </dict>
+        </array>
+    </privacy-manifest>
+</platform>
+```
+
+Also, ensure all four keys—`NSPrivacyTracking`, `NSPrivacyTrackingDomains`, `NSPrivacyAccessedAPITypes`, and `NSPrivacyCollectedDataTypes`—are defined, even if you are not updating the other items. Apple requires all to be defined.