The Nokia Lumia 635 will also be made available for customers of MetroPCS, the pre-paid carrier that is owned by T-Mobile. Pricing hasn't been disclosed for either carrier, although Nokia said that the phone would be priced at $189. T-Mobile has a placeholder up on its website, which you can see by clicking on the sourcelink.
AT&T, the nation's second largest carrier, announced that it too will be offering the Nokia Lumia 635. The mobile operator added that it was the first carrier to offer a Nokia branded Windows Phone model, that it was the first to offer a Windows Phone with LTE connectivity, and that it has the largest selection of Windows Phone models to choose from.
"The Un-carrier’s all about removing crazy restrictions and delivering total wireless freedom and flexibility. With Windows Phone, we can offer customers another great choice in mobile platforms. And we’re excited to bring to both T-Mobile and MetroPCS customers the combination of next-gen software, great features and fresh design that Nokia’s latest Windows Phone has to offer...With all the advanced features the Lumia 635 has to offer – like its quad core processor, beautiful 4.5 inch screen and most advanced Windows Phone OS – we fully expect Nokia’s latest smartphone to do as well or better than its predecessor."-Jason Young, senior vice president of Marketing, T-Mobile
While we might not know the exact release date, we are told by T-Mobile that the Nokia Lumia 635 will be the first handset to come with Windows Phone 8.1 out of the box. The phone will be equipped with a 4.5 inch ClearBlack display with 480 x 854 resolution, and will be powered by a quad-core Snapdragon 400 CPU. The Nokia Lumia 635 will be available in 5 colors, and offer changeable shells for those who like to customize their handset.
source: T-Mobile, AT&T via WMPoweruser