Now we're hearing from sources that both the Motorola DROID RAZR HD and MAXX HD may be delayed due to antenna issues. This is caused not only by the size and location of the antennas, but also since they make contact with the external edges of the device, which can cause the signal to degrade over time as the user touches them.
As you can see by the FCC diagrams below, the placement of the antennas on the DROID RAZR HD (and RAZR MAXX HD) are different than on the DROID RAZR M. Not only that, but their size is smaller.
For example, on the DROID RAZR M, the LTE antenna is located at the top the unit and measures 18.9mm width by 37.0mm length, but on the DROID RAZR HD the LTE antenna is located on the bottom and is only 10.5mm width by 30.0mm length. There is also a difference in size with the Main Antenna, which is used for Voice and 3G EVDO, but the DROID RAZR HD does have a second diversity SVDO TX antenna at the top.
Sources say that Motorola is working to correct the antenna issues on the DROID RAZR HD and MAXX HD and are still pushing for a holiday release, though it may not make it until after Thanksgiving/Black Friday. We hope that Motorola does the right thing and resolves this, as they don't want another poor-reception DROID BIONIC on their hands.
source: HowardForums (xbernaut)