<br /> Apple has used the lightning connector for seven years.<br />It used to be on everything, but now it's only found on two types of devices — iPhones and some iPad models.<br />The lightning cable Apple includes with the iPhone doesn't support fast charging and transfers data at USB 2.0 speeds.<br />Switching the iPhone to USB-C could unify Apple's products.<br />1. It's proprietary - so fewer devices can use it.<br />2. It's more expensive.<br />3. It's slower.<br />4. It doesn't support fast-charging. <br />
