I just upgraded from a Thunderbolt to the Razr Maxx HD.
With the Thunderbolt, I never had any reception problems, but with the Razr, in my office, I only have one bar, and I miss a lot of calls. There have been several times my wife has called, but it never rang my phone; texts seem to come through, so she's had to resort to texting me.
I've tried a new sim card; that didn't help. Data seems to be fine - it's just cell reception that seems to be poorer than with the TB.
Is this a common issue with the Razr phones?