With an Apple iPhone 15 cable, you can connect your iPhone 15 to a charger or to your MacBook. All iPhone 15 models have 1 USB-C port. So old Lightning cables won't fit on your iPhone 15 anymore. You need a USB-C cable. Always choose a sturdy nylon or kevlar cable for your iPhone 15, because they last longer than plastic cables. Do you have a fast charger with oval USB-C port? Buy a USB-C to USB-C cable. For an old charger with a rectangular USB-A port, you use a USB-A to USB-C cable. Your iPhone does charge slower than with a fast charger this way.