Add me to the list seeing poor RF performance. Played with a normal S6, and particularly on B41, I'm seeing at least a 5dbm worse signal compared to my S5 and Note 4. Throughput is also reduced, with line of sight it was pulling ~40mbps where the S5 and N4 consistently managed ~65mbps. Although this is the snappiest phone I have used from Samsung, the weaker radio is a deal breaker. The S5 and N4 have no problems handing off between B41 sites here, but the weaker radio in the S6 causes it to drop to B25/B26 when moving between sites.