A. 1. Check system requirements: Ensure your device meets the minimum system requirements for Contract Killer 2. This information can usually be found on the App Store page. 2. Update your iOS: Go to Settings > General > Software Update to check if there is a newer version of iOS available. Updating your device can improve compatibility with apps.

B. 3. Consider device upgrade: If your device is significantly outdated, consider upgrading to a newer model that supports the latest apps and features.