I only have an iPad transfer tool. But now I need to transfer some files from PC to my iPhone. Do you have any good advice to do that?
At first, I think I must download a special iPhone Transfer. However, I found it is not necessary, because my iPad transfer is compatible with iPhone. Moreover, it also supports iPod, iPod touch, iPad 2, iPhone 4, iPhpone 4S, and so on. So it is a piece of cake to transfer files from PC to iPhone with iPad transfer.

With it, you can transfer music, movie, Pictures, TV Shows, Podcast, iTunes U, eBooks, Camera Roll, Ringtone, SMS, Contacts, and Voice memos from your iPad/iPhone/iPod to PC or iTunes. Meanwhile, this software will help you input PC files including videos, audios, eBooks, and pictures to these Apple devices.
Besides, you can use this transfer to send files like movie from iPhone to iPad. To do that, you can have a look at the steps about how to transfer iPhone movie to iPad

Differently with other transfer products, this best transfer provides a powerful conversion function to convert DVD as well as general video and audio files to various devices including iPod, iPhone, iPad, and iPad 2. And what is more, you can use these converted files to make your own ringtone.

The steps to transfer files from PC to iPhone.

Step 1: Download and run.
Download this iPad transfer and run it.

Step 2: Connect.
Connect iPhone to PC.

Step 3: Select and transfer.
Click “Movie”, “Music” or “Photos”, then hit “Import files” button to select your files.
Click “OK” button to directly send files from Pc to iPad.
Mac users can use iPad Manager for Mac, which also supports iPad, iPod, iPhone versions.