So I just received an email that my phone, which has been at Nokias factory since 1/31/13 is being sent back to me. Great news right? Not really. In the email I was told that they were not able to address the issue. The issue was the screen would go black when making calls and would not return. It also would not wake when I received notifications. Long story short I am getting my same exact phone back, no problem solved, nada. After not having my phone for almost 2 weeks, having to return three previous defective devices, and now this, I can pretty much say I am never supporting a company as dim witted as Nokia. Funny thing is that the company was relying heavily on this phone, only to have it fail in so many quality control aspects. Good luck in the future Nokia, you're gonna need it.