The most popular methods use either cloud storage apps or Apple's Move to iOS app available on Android. With cloud storage, you have a variety of options, including Google Drive, Dropbox, and more.
To transfer files between your Android and iPhone, you'll need to use your PC as a middleman. Since both of the devices run on a different operating system, there's no way to connect them ...
Do you ever wish you can just drag and drop music and videos you to your Apple device without using iTunes? Ever found the video you're trying to transfer is rejected as it's in the wrong format?