QUICK ANSWER. If you get an 'iPhone cable not supported' message on your iPhone screen, then it means your cable is not being recognized by your device. This could be down to one of several 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 Click on the Apple menu in the top left corner of your screen. Click Shut Down. (Image credit: iMore) Next, press and hold the power button for 10 seconds. Release the power button. Wait a few seconds. Press the power button again to turn on your Mac. Once your Mac is loaded up, see if your USB-C ports are functioning. When the supplied cable is plugged in to a Windows PC USB-C port the iPhone 12 charges and makes the charging connection sound and Windows makes the new device found sound and shows up in Device Manager - Universal Serial Bus Controllers as – Unknown USB Device (Device Descriptor Request Failed). Make sure that you've connected your USB-C power adapter to a working power outlet. Unplug your USB-C power adapter from the power outlet, then plug in a known good device, such as a lamp to confirm it powers on properly. If the power outlet works, connect your USB-C power adapter and try to charge your Mac. If your Mac still won't charge, shut Yes, you can fast-charge your iPhone 12 using the included Lightning-to-USB-C cable and a USB-C power charger. I have an 18W USB-C charger. Will that work for iPhone 12 fast charging? It might. While fast charging works on older iPhones with Apple's 18W USB-C charger, for whatever reason, Apple claims that you need at least a 20W charger to If I use the same sockets/chargers etc with USB-A to USB-C it's absolutely fine. -- Using the same ports with an USB-C to USB-C cable charge any other non-Apple devices without any problem (even a power heavy 15" PC Laptop). -- If a magsafe is used on the same ports, again charges completely fine. Then try switching to a new lighting cable and make the connection go smoothly. Tip 2. Try a different USB port. If the problem is not found to be the cable after inspection, you need to check the port. Most likely, iPhone cannot connect to PC because the USB port on the computer has stopped working. To tell a USB-C Thunderbolt cable apart from a regular USB-C cable, you should look for the Thunderbolt icon on the former. I expect all four iPhone 15 models to ship with regular USB-C cables. GDKe.

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