I missed that thanks! Still looking for where I'm sure someone testified the phone is what's needed to recover data.
It was said by someone along the way that getting records from the carrier would not supply LE with the texts, that the actual phone would be required for that.. so LE was fortunate in obtaining many phones/devices. It didn't really specify whether it was the phone itself, the simcard inside, or both that are required. Then that link seems to suggest that the sim itself isn't much either, but that the s/n is what can get details from the carrier, but then we are back at square one, so I have no clue. Personally, it feels like DM's defence team are making a big to-do about not much. I personally don't feel like it is evil to dispose of a sim card if the account is no longer in use, and as has been suggested by a few here, a sim card can be inserted into various phones at various times, so perhaps MS only had one in use at the time?