# iPhone won't connect Try these steps if your iPhone does not appear or connect. ## Check the connection 1. Unlock your iPhone and leave it connected. 2. Try another data cable or USB port. Connect directly to the computer if you're using a hub. 3. Open Device in GPSPhantom and check the instruction shown for your iPhone. ## Check trust and Developer Mode Accept Trust This Computer on your iPhone. Check that Developer Mode is on in Settings under Privacy & Security. Finish any restart or confirmation prompt. ## On Windows Install Apple Devices from the Microsoft Store and restart your computer. ## Try reconnecting Quit GPSPhantom, reconnect your unlocked iPhone, then reopen the app. If it still won't connect, note the error code and open the error messages article. Note: iOS versions below 17.4 aren't supported. ## Related articles * [Set up your iPhone](https://docs.gpsphantom.com/getting-started/setup-iphone) * [Error messages](https://docs.gpsphantom.com/troubleshooting/error-messages)