iphone 5 locked
hi
i have purshased a iphone 5 from netherland from appstore and after 8.1,2 update it was locked
after check the imei i see that is unlocked but whene i put a sim card it say in itunes sim card locked
now its work only with att sim card whene i check it
MODEL: IPHONE 5 64GB WHITE A1429 GSM
IMEI: 013349000******
SERIAL: C39J95H1F39D
FIND MY iPHONE: OFF
HW WARRANTY: Out of Warranty (0 days)
PHONE SUPPORT: No phone support (0 days)
PURCHASE DATE: 2012-12-11
PRODUCT SOLD BY: APPLE NETHERLANDS
INITIAL CARRIER: ALBERT UNLOCK TEST AND TRAINING
PURCHASE COUNTRY: NETHERLANDS
what mean the ALBERT UNLOCK TEST AND TRAINING
please help
iPhone 5, iOS 8.1.2