Best five bucks I've ever spent! Using this cable, I was able to copy all the important data from my iPhone 4 (contact list, pictures, bookmarks, etc.) to the new Samsung Galaxy J7 with minimal effort on my part. One end of the OTG cable connects to the Galaxy's micro USB charging port, while the USB end plugs your iPhone charger into the other end of the OTG cable data you select in Smart Switch app, from iPhone to Galaxy It couldn't be easier when he encounters an app on iPhone, which has no equivalent in Android, he offers the same app from the Galaxy App Store for you to decide whether or not I accept his offer. My biggest fear of switching from iPhone (IOS) to a Galaxy (Android) phone was an unattractive and painful process of having to manually re-enter my entire list of phone numbers, one at a time, into the galaxy. o Problem solved. Any other transfer mechanisms, like iCloud or iTunes backups and then Google email transfer would work but felt clunky and cumbersome. The combination of this OTG cable and the Samsung app is very simple. You can download and install the Smart Switch Mobile app from the Galaxy App Store. The Smart Switch instructions list restrictions on which devices and operating systems support the On-The-Go (OTG) transmission mechanism. Besides iPhone to Galaxy transfer, it also supports Android to Android transfer (where the app resides on both the sending and receiving device). You should study it yourself to see if it suits your needs. But Samsung convinced me with this simple and customer-friendly process.