So me and few friends at work use to have a Nokia Lumia 900 using at&t. The area where I work didn't have the best coverage, maybe 2 bars of LTE outside and when on the first floor of the building we would get no signal at all(911 calls only). Most of it was because of a building blocking the signal, even though Sprint and Verizon received pretty good coverage.
Now Nokia Lumia phone was not the only one having this issue with at&t, no matter the phone(Android, iPhone etc) no one would get a signal at all.
Then one day at&t did some work on one of their towers and all at&t phones started to get coverage, including my Nokia 900.
So April I went out and bought me the Nokia Lumia 1520 and noticed I started getting no signal again. Sometimes it would even tell me I had 2 bars of LTE, but wouldn't be able to go to any websites.
However, the iPhone, Android and even the Nokia Lumia 900 users were able to get 2 or 3 bars of LTE when I was not getting no signal at all.
Thinking it was my phone, I took my wife phone to work, which is a Nokia Lumia 1020 and she was having the same problem.
Another friend of mine bought a Nokia Lumia 1520 and he is having the same issue.
I called Nokia about the poor reception, and they said it's not a problem with the phone but the reception in the area or the SIM card. I tried to explain to the technician that all other at&t phones were not having this issue, even older Lumia phones; I even tried explaining other newer Lumia phones were having the same issue. He wouldn't listen, just kept telling me it's not a problem with the phone.
Does anyone know if newer Nokia Lumia phones have a poor radio or is it a software/firmware issue? If it's a software/firmware issue, how can I get Nokia/Microsoft to listen?