Handset maker, Nokia has found a memory management problem in its newly launched Lumia 900 smartphones and the company is offering exchanges and free credit to control the damage.

Nokia said that it identified the issue and it has already developed the solution to fix it for the users. The problem was reported after a number of users complained about the issue after purchasing the phone following its launch this Easter Sunday.

Experts say that the success of the device in the US market will determine the future of Nokia and the Windows Phone platform. The campaign will begin when the phone launches on April 8. The two companies are planning for a massive television marketing campaign to raise consumer awareness about the device.

AT&T will put up signs and posters promoting the device and will make feature Lumia 900 as the centerpiece on its retail stores. The company will be lunched with a number of accessories to attract more users.

The Nokia Lumia 900 features dual cameras; an 8-MP camera with a lens from Carl Zeiss and a front-facing camera for videoconferencing. The device ahs an impressive 4.3-inch AMOLED ClearBlack display and is powered by a 1.4-GHz Qualcomm Snapdragon processor. Lumia 900 will come with an available storage of 14.5 GB.

The device will run on AT&T's high-speed LTE network. Microsoft CEO Steve Ballmer had earlier said that the handset will be promoted across the 2,400 U. S. stores of Microsoft.