Sync iPhone and iPad automatically, using the program iTunes. The biggest difficulty is that when connecting both devices, all the contacts, apps and media files will be merged. When you try to delete one file, it will be erased from both devices.

To solve this problem, you need to create a separate iTunes library for iPhone and iPad. First you need to connect one device to create a media library, and then close the program. Then again you need to launch iTunes, hold down Option for MAC or Shift for Windows. The program will open with the proposal of creating a new library. You must agree to connect a second device and to synchronize with it. After that you can freely copy files from one library to another.