It's updated once a day and remains the best way to check the status of your refund. (thecollegeinvestor.com)
If you mail a paper return to the IRS, it can take more than a week or two to get your return in the system so that you can check the status of your refund. (freefrombroke.com)
If you don't have access to the Internet or a computer, you can call the IRS at 800-829-1954 to obtain the status of your refund. (turbotax.intuit.com)