You can test for it by sending typical files over http (aka download) and then skyping and compare the bandwidth. Or the other way round. Run a few tests over a

You can test for it by sending typical files over http (aka download) and then skyping and compare the bandwidth. Or the other way round. Run a few tests over a few days. This won't tell you whether Sprint is behind this, however you will be able to know whether Skype is affected. If yes, you could try to tunnel the Skype traffic over ssh. If ssh traffic is not throttled you should experience better throughputs.