Microsoft’s efforts to catch back up in mobile will begin in earnest on April 8th when two new 4G LTE Windows Phones are released: the HTC Titan II and the Nokia Lumia 900, AT&T confirmed in a blog post today. The April 8th release date had previously been reported, but new details are emerging including news that a white version of the Lumia 900 will go on sale on April 22.

The Lumia 900 costs $100, while the HTC Titan II (best known for its 16 megapixel camera) will cost $199.

“One of the coolest things about Windows Phones is the people-first experience and how easy and fast it is to connect to the people and things you care about most,” AT&T’s Jonathan Church writes in the post. “The Live Tiles present glance-and-go updates including calendar appointments, emails or social media feeds.  With the intuitive interface and access to the information you need right at your fingertips (literally), these phones fit so easily into your daily life.”

The new phones come as Microsoft attempts to boosts its U.S. marketshare in smartphones, which now stands at just 4.4 percent, according to comScore. Here’s a look at the HTC Titan II:

Previously on GeekWireDo AT&T sales reps really get the hottest new Windows Phone?

Like what you're reading? Subscribe to GeekWire's free newsletters to catch every headline

Job Listings on GeekWork

Find more jobs on GeekWork. Employers, post a job here.