We’re looking at an iPhone 15 Pro Max with what’s left of a melted USB-C charging cable sticking out. A Redditor’s iPhone 15 Pro Max melted a third-party USB-C cable. Image source: ...

But for iPhone versions 5 to 14, Lightning is the port you need a cable for. If you still have a charger with a USB-A port, consider upgrading to a USB-C charger as iPhone fast-charging only works ...

as discussed in the article "Why won't my iPhone charge?," you might need to restart your phone, check the Lightning cable for kinks and breaks, and ensure your power source is working.