7921 Failure - Has MAC address D80000000401 ????

We run WLCs with code version 4.2.130.0. Our 7921s run with code version CP7921G-1.3.2.
I have some 7921s that are failing. They hang at the Loading Network
Services stage of the boot-up process.
From the phone keypad, when I view the MAC address to attempt to troubleshoot the issue,the MAC address is listed as D80000000401. This is not a valid MAC address. The phone is not associated with an AP and therefore is not registered to Call Manager. I cannot find the phone by searching for that MAC
address in WCS.

Mike - the phone doesn't work and I'm not RMA'ing the thing. Any good engineer would want to know why it's not working.
So who gives 2 shits if I crack it open. The fact is - WHEN I RESEATED THE ANTENNAE CIRCUIT BOARD IT STARTED WORKING AGAIN!
We have a HIGH failure rate on these 7921 phones and they obviously CANNOT take a the 24/7 beating of a hospital environment. Otherwise we wouldn't be getting 20 of them returned every month that are non-functioning. And yes, many of them have been dropped...HELLO...they are essentially a cell phone. They get dropped.

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