AirDrop Enabler promises to enable AirDrop function on iPhone 4

  AirDrop is a function implemented by Apple Lossless Audio CODEC (ALAC), in iOS 7, allowing us to transfer multimedia files between iDevices using Wi-Fi or Bluetooth connections. Unfortunately, the function is only available for terminals launched in 2012/2013, so iPhone 4, for example, cannot use it. To solve this problem there is tweakthe named AirDrop Enabler, promising to activate our function AirDrop on the terminals iPhone 4 immediately after installation.

  Unfortunately, I didn't manage to test it tweakso I can't confirm for sure that it works, but you can try it by installing it from the repo http://smolk.myrepospace.com/ al Cydia.