How do I specify LSMinimumSystemVersion in an Expo app?

To specify LSMinimumSystemVersion in an Expo app, you need to modify the Info.plist file. Since you're using Expo, you don't directly edit this file. Instead, you use the app.json (or app.config.js) file to configure the native iOS settings.

Here's how you can do it:

1. Open your app.json or app.config.js file:

- This is the main configuration file for your Expo app.

2. Locate the ios configuration:

- Add or modify the ios section in your app.json file.

3. Specify LSMinimumSystemVersion:

- Within the ios configuration, you can use the infoPlist key to add or modify entries in the Info.plist file. Add the LSMinimumSystemVersion key with the desired minimum iOS version.

Example app.json:

{
  "expo": {
    "name": "YourAppName",
    "slug": "your-app-slug",
    "ios": {
      "bundleIdentifier": "com.yourcompany.yourapp",
      "infoPlist": {
        "LSMinimumSystemVersion": "13.0"
      }
    },
    "android": {
      "package": "com.yourcompany.yourapp"
    }
  }
}

Explanation:

- "LSMinimumSystemVersion": "13.0" specifies that the minimum iOS version supported by your app is iOS 13.0. Adjust the version number as needed for your app's requirements.

4. Rebuild your app:

- After modifying the app.json file, you need to rebuild your app for the changes to take effect. Use the following command:

expo build:ios

- Follow the prompts to complete the build process. This will create a new iOS build with the updated Info.plist settings.

5. Verify the setting:

- Once the build is complete, you can download the .ipa file and inspect the Info.plist file within it to ensure that the LSMinimumSystemVersion key has been correctly set.

Important Considerations:

- Ensure that the bundleIdentifier in your app.json matches the one in your Apple Developer account.

- Choose an LSMinimumSystemVersion that aligns with the APIs and features your app uses. Setting it too low might cause compatibility issues if your app relies on newer iOS features.

- Remember to update your app’s target iOS version in the Apple Developer Portal as well.

By following these steps, you can successfully specify the LSMinimumSystemVersion for your Expo app, ensuring compatibility with the targeted iOS versions.

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