The network reception at my place is pretty bad - especially on my network. My HTC HD(Blackstone) had issues sending texts and quite often I only heard "noise" instead of the other person.
I had problems sending a text two times during the last week that I had my phone but calls worked with no problem at all - so it definitely is an improvement.
My old Nokia N95 8 GB had no problems whatsoever - please Nokia, won't you build me a nice WP7 Phone?
Nokia Lumia 920 (RM-821) - 8.0.10211.204 Stock HTC Titan - 7.10.8773.98 Stock