AT&T's online store indicated that the wireless carrier is temporarily sold out of both the cyan and the black matte versions of the Nokia Lumia 900, Neowin reports.

That would seem to corroborate statements made earlier this week from Paul Roth, AT&T’s president of retail sales, who said that sales of the Lumia 900 have exceeded the company's expectations.

The flip side of all this good news is that Nokia may not have shipped enough units of the Lumia 900 to meet its demand. Some potential customers may not decide to wait around and could pick another smartphone, which means Nokia loses out on some sales.

Of course, a sell out on AT&T's online site doesn't mean there are no Lumia 900 units available to purchase. You can possibly go to your local AT&T retail store and pick up a unit. Other online retailers such as Amazon still seem to have units available as well, the report says.