The iPhone 15 and 15 Plus will have a USB-C port so that Apple can comply with a European Union rule requiring a universal charger. The EU’s rule is supposed to cut down e-waste, although Apple has argued that ditching Lightning chargers could do the opposite. The Verge spoke with e-waste experts last year about the change, and the environmental impact depends on a couple wild cards: consumer behavior, and whether standardization makes it easier to recycle discarded chargers.