Is it safe to use a USB-A to USB-C cable (with a USB-A wall plug) to charge the iphone15? Searched online & really couldn’t find any answers - only thing I could gather was USB-C to USB-C cable is a faster charge. For now I dont care about a faster charge, strapped for cash & so cant buy a 2nd/3rd C-C USB. So wondering if its “safe” to use an A-C USB until I can get more C-C USB’s.