Before I had the Nokia Lumia Icon I had a Galaxy S4. The Galaxy S4 would always drop calls at certain locations close to where I live. Within days of getting my Lumia Icon I was able to realize that my calls were not dropped at those locations. From that I have gained that your coverage is partially due to your phone as well as of course if a carrier has towers near you.
At&t has had the cyan update out for a while now and I haven't heard of any bad relationships between At&t and Microsoft like I have heard people stating about Verizon and Microsoft. So since At&t has the cyan update I am thinking of going to their network. So setting aside the fact that the phone plays a partial roll in coverage, for anyone who has had At&t recently how much worse or better was the coverage for you?
Thanks,
vzwenduser