This article will explain the common causes of iPhone error 4013 and how to fix it. Find a masterpiece tool to help you to eliminate this problem. The iPhone could not be restored. An unknown error occurred (4013). If you encounter an issue with your iPhone, you may see an error code displayed on your screen. One of the error codes is iPhone error 4013. So, what can you do when this error code appears? No need to panic! This article will guide you to learn about iPhone error 4013 and how to solve it. WHAT IS ERROR 4013? The…