So everything has been going smoothly with my N5 on T-Mobile. Then I get home from work today and realize that my phone has no signal. My first thought is that something is wrong with the phone. So I power cycle the phone, still no signal. So I put my sim back in my N4 and that has no signal. So I resort to calling customer service, and they tell me that the tower by my house is currently being upgraded with 4g, and that it could take up to three days to complete the upgrade. So now I have this brand new phone and no cell network to use it on right now.