During its press event on September 5th, Nokia will announce two new Windows Phone 8 devices.  The two smartphones in question are part of Nokia’s Lumia family, and are currently code-named the “Arrow” and “Phi.”

The Phi will be a high-end device that will be an AT&T exclusive, replacing the Lumia 800 and 900. The handset will reportedly feature a polycarbonate body and a large curved glass display.  The Arrow is said to be a mid-range Windows Phone 8 device that will be available from AT&T and T-Mobile, while Verizon will reportedly launch a near identical variant, code-named Atlas, later in the year.