In order to remedy the problem of iPhone users' communications being improperly disclosed to third parties, Apple never rewrote its code, nor did Apple advise consumers to manually disassociate their Apple IDs from the recycled SIM Cards. Instead, with the release of iOS 12 on or about September 17, 2018, Apple finally introduced mandatory multifactor authentication, which is a method by which an iPhone user can only be granted access to an iPhone by successfully presenting two or more factors in order to confirm his or her identity. Such factors may include a piece of information only the user would know or a password."