Well, just did some quick research and it confirms that they do sell a lot of cell phones and have a leg-up because they carry all carriers. I also confirmed that, as we thought, they are not doing so well:
Wikipedia...I know, I know, but it links to the primary material.
In April 2012, after RadioShack had released very poor first quarter 2012 results, Moody's reduced its ratings on RadioShack to junk status.[SUP][7][/SUP] On April 14, 2012, the stock sank to an all-time low early in the day's trading.[SUP][8][/SUP][SUP][9][/SUP] On July 11, 2013, the stock price sank again on rumors that the company would soon file bankruptcy.
Wikipedia...I know, I know, but it links to the primary material.