Wiped out by the iOS 18 upgrade, the ‘Review Personal Videos’ feature returns as the best tool to find and zap storage-hogging files that you can live without. With many-megapixel cameras and the ability to shoot video at up to 4K, an iPhone’s storage fills up quickly. Sure, ballooning apps and digital downloads like audiobooks and movies also take up space, but they are easy to offload and reload as needed.