Nokia’s new Lumia 900 smartphone is getting a huge push at AT&T, but the carrier’s marketing budget for the new flagship Windows Phone won’t quite add up to sky-high figure suggested on Monday. Ad Age published an unconfirmed report on Monday stating that AT&T is preparing a massive marketing blitz to promote the new Nokia smartphone BGR called Windows Phone’s best shot yet to gain ground in the mass market. The carrier will spend as much as $150 million promoting the Lumia 900 according to the report, more than it spent to launch the iPhone. Following our coverage of Ad Age’s report, a trusted source confirmed to BGR that this is, in fact, not the case. Our well-placed source states that while AT&T is planning to push Nokia’s new Lumia smartphone aggressively, the $150 million figure is not even close to reality. This makes sense considering the big budget Nokia reportedly has set aside for the Lumia 900, but our source had no information to offer regarding Nokia’s marketing plans. An AT&T spokesperson declined to comment.