How quickly can this USB cable I've just found in my drawer transfer files? And can I use it to fast charge my smartphone?

Check your iPad’s data transfer rate before choosing a new cable. For charging only, any of the USB-C cables reviewed below will be fine as 20W should be enough to charge even an iPad.

That means depending on what USB-C cable you buy, your iPhone's charging rate and data transfer speeds may vary from optimal to good enough to painfully slow. Fortunately, I've connected with ...