Xender is a tool that enables file transfers between Android devices at an incredibly fast rate. Instead of using Bluetooth or WiFi, Xender uses the NFC protocol of all devices involved in the transfer, ensuring a transfer rate that is 4 to 40 times faster than normal Bluetooth.
With Xender, you can transfer virtually anything from your Android: contacts, files, images, music, videos, and even apps. All you need to do is create a transfer group and also (obviously) be close to the user you want to transfer files to. This is very important: Xender only works if the person you want to transfer files to is nearby.