1. Plug your iPhone into computer via the USB cable. Launch iTunes if it doesn’t launch automatically. 2. Find “File” option on the upper left corner. Then click “Add File to Library”. 3. Select photos from your PC and then iTunes will sync the photos to iPhone automatically.You may need your Apple ID to start the photo syncing. If iTunes asks, type your Apple ID into the blank, and then the synchronization starts.hen click “Add File to Library”. 3. Select photos from your PC and then iTunes will sync the photos to iPhone automatically. You may need your Apple ID to start the photo syncing. If iTunes asks, type your Apple ID into the blank, and then the synchronization starts.