I have terrible reception in my house and drop calls constantly. I notice i get almost full bars if i hold the n9 upsidedown and by the four corners with my fingers. Obviously, this is an huge inconvenience in terms of usability in my home. To be fair, i always had low bars with the n900 but rarely dropped calls. It could be t-mobile's fault, as I have yet to try an at&t micro sim. BTW, i have a chinese 64gb n9 v10.2011.34-1_pr_005. I'm hoping it's a fix away by means of upcoming update.