Apple may have to redesign the iPhone to be compatible with a USB-C charging socket as a result of proposed European Union requirements aimed at curbing waste and making it easier for consumers with multiple devices.

The European Commission said Thursday it would like a single charging socket for all smartphones and tablets, as well as devices such as cameras, some earphones, portable speakers and some screens.

Apple objects to the idea of a universal charger, arguing that it limits creativity and the potential for more energy-efficient devices. The draft project adds to pressure from the European Union in recent years with competition investigations into its app store and payments system, and adds to a legal battle over a massive tax refund order.