We got tipped with Lumia 928’s reviewer guide released by Nokia. It reveals nearly everything about Lumia 928 and suggests reviewers of Lumia 928, how to go about the review of various features of the device. It reveals light polycarbonate material for that unibody to digitally amplified Amazon box speaker to what lies where in the phone. Many were wondering what material is being used for Lumia 928 and it is still polycarbonate but it is lightweight. The processor is also revealed to be same dual-core processor as on Lumia 920, Qualcomm MSM8960. Also, great to know that the phone is global ready with Quadband GSM frequency support. Want to know more, click on the document link below.