WiFiKill

$1.99

WiFiKill allows you to scan your wifi network for devices, see their vendor and cut network connection for specified devices. This way you can get rid of network hoggers. 

IMPORTANT: I am in no way shape or form responsible for what you decide to do with the application should you decide to install it and use it. This video is for educational purposes ONLY. Use at your own risk!

WiFiKill lets users on rooted Android smartphones kick off other people from WiFi networks so they can have all the bandwidth to themselves.

Developed by ponury, WiFiKill uses an advanced technique that fools all the devices connected to a WiFi network into thinking that your smartphone is the wireless router. All traffic from these devices then goes through your phone, allowing you to drop every single packet of data from them so you can enjoy a dedicated connection and feel like a hacker from some international intelligence agency (which you’re still not).

*** ROOTED PHONES ONLY ***

WiFiKill 

allows you to scan your wifi network for devices, see their vendor and cut network connection for specified devices. This way you can get rid of network hoggers.

Once launched, you have to tap Off to actually turn on the service. WiFiKill then scans your WiFi network for connected devices, lists them by their IP address and allows you to kill them in three different ways which you can select from Preferences: DROP, DROP + REJECT and DROP + redirect. DROP only prohibits internet access and does not send back any response, DROP+REJECT does the same but sends back a destination-unreachable message to the source while DROP+redirect keeps redirecting user to home. All three are, essentially, equally lethal since you get all bandwidth to yourself.