Does this have to do anything with
Sisvel MP3 Codel license? I remember the Meizu M6 had some problem with that issue. And that was the reason they used Dane-Elec to distribute it in the U.S.
And also awhile back Sandisk booth was shutdown at IFA show in Berlin in a similar way.
Slashdot | SanDisk MP3 Players Seized in MP3 Licence Dispute