Don't just go by your provider's promise on broadband speed. Use the Which? free speed test to investigate. Here we explain how to use the speed checker. If your broadband isn't as fast as it should ...

Don't just go by your provider's promise on broadband speed. Use the Which? free speed test to investigate. Here we explain how to use the speed checker. If your broadband isn't as fast as it should ...

Comcast also says download speeds are getting ... If you're interested in testing your new speed, several online tools are available, including simply Googling "speed test", which lets you run ...