The Pew Research Center has updated their instructions for finding, accessing and downloading data from their phone and online survey research. The data is anonymized and standardized before publication, so it is made available after the research reports based on it. When available, you can find the data linked from the associated report or through the Tools & Resources section. You can browse the datasets through 10 research areas. Download and use of the data is free, but you must register for an account and agree to their Terms of Use.