A. 1. Check device compatibility: Ensure that your iPhone model is compatible with the app. Refer to the app's description in the App Store for compatibility information. 2. Update iOS: Go to Settings > General > Software Update and ensure your iPhone is running the latest version of iOS. 3. Clear storage: Go to Settings > General > iPhone Storage and free up space if your device is low on storage, as this can affect app performance.

B. 4. Use alternative devices: If possible, try using the app on a different iPhone model to see if the performance improves.