Apple Inc. (NASDAQ:AAPL) is certain a number Android users will start using the iPhone 6 or 6 Plus when they are released Friday and has developed a guide on how to transfer files between an Android smartphone and an iPhone.

The new guide gives details on how to transfer mail, contact and calendar information, photos and video, music, books and PDFs, documents and applications. But the fact that the Cupertino, California, company had to write such a guide reflects the incompatibility of Apple’s iOS software and the Google Inc. (NASDAQ:GOOGL) Android software. While users of multiple iOS devices can take advantage of seamless syncing between gadgets with a USB connector, transferring files between an iOS device and an Android device requires a few more steps.

Apple directs former Android users to utilize third-party apps for transferring files, some of which may not be of the best quality. Additionally, Apple appears to have no idea that many Android devices will automatically prompt the Android File Transfer application when connected with a Mac computer; Apple recommends the app as one that users can download.

Apple doesn’t have much direction for former Android users trying to find their favorite Android apps on iOS either. Luckily, many applications debut on the Apple app store before becoming available on the Google Play Store, meaning if a user had an app for Android, there’s a good chance it’s available for iOS.

Nevertheless, with demand for the iPhone 6 and 6 Plus at a record high with pre-orders exceeding 4 million, Apple is preparing to receive a wave of Android converts. Apple CEO Tim Cook indicated last week that the iPhone 6 and 6 Plus launch would likely trigger "the mother of all upgrades." The devices are expected to sell over 10 million units during their launch weekend.

Both iPhones include larger displays than have ever been seen on an iPhone – the iPhone 6 is 4.7-inches while the iPhone 6 Plus is 5.5-inches. Analysts say the devices will cater to the fastest-growing market of devices with displays larger than 4 inches but smaller than 5. Also, the new smartphones will cater to the vital niche market for devices over 5 inches that do not include many smartphones premium price points and specifications.

“Having the larger screen size for some people who would traditionally be attracted to a phablet, [Apple] wants to win those people back,” Mark McDonald, co-founder and co-CEO of Appster, said.