Download this app if: you want to ensure you're getting the most bandwidth.
Wi-Fi Killer, get all bandwidth for yourself.
*** ROOTED PHONES ONLY ***
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.
AD-Free (donation) version can be found here:...
My Wi-Fi! — Prevent other devices from hogging all the bandwidth with this handy app.