SimpleDrop is a service where you can easily synchronize, back-up and transfer contents such as photos, music files, video files, address book and text messages between PCs and smartphones via Wi-Fi.1. You can easily transfer photos, music, and videos from PC to smartphone and vice versa.2. You can easily exchange photos, music and videos between smartphones on which the SimpleDrop application is installed.3. You can always restore the phone address book even if your phone device is lost or broken, by saving it in your PC easily.4. You can simply save your photos taken by your smartphone into your PC.Note. Please download and operate the SimpleDrop application on your PC and your smartphone respectively if you have the application on either your smartphone or PC.(If you input an email address when you subscribe, download URL would be sent via e-mail)