Nokia is continuing its conquest of the low-end smartphone market and the Mobile operators are an important ally for Nokia in the U.S.. Nokia and the telephone operators are committed to expand the Windows Phone installed base in the U.S.. Verizon is expected to present in the month of April, the Nokia Lumia 928 , revised version of the top range Nokia Lumia 920, while T-Mobile is preparing the distribution of the Lumia 521.
