In response to the possibility of Android users making the switch from Android to iOS, Apple has since published a support document in which they will guide Android users through the process of transferring the content from their phones, like their emails, contacts, calendars, photos, and more to their new iPhone.
It is a pretty detailed process and if you are indeed an Android user looking to make the switch, then this is a document you will want to check out. This seems to be in line with Tim Cook’s earlier statement about how the company’s new iPhones will trigger the “mother of all upgrades”.
It also seems to be in response to a guide that Google’s Eric Schmidt posted last year in which he detailed the process of how iPhone users could switch to Android and bring over their contacts, mail, photos, and etc.