How to Tell if a USB Cable is Working or Not . The easiest way to check whether a USB cable is working or not is to try charging a different device with it. This helps you determine if the core problem is the cable, or the device itself. Here are some troubleshooting steps that will help you identify if your cable isn’t working:
The quickest way to charge your iPhone is with a fast charger: a 20-watt power adapter with a USB-C to Lightning cable. As long as you own an iPhone 8 or later, you can fast-charge your phone from