Device is replaced use GSX check Возможно это Replaced IMEI. Информацию по таким IMEI можно получить по другой услуге:
iPhone информация по IMEI (Replaced IMEI)
Serial Number: C8PK1T3RDTC1
Initial Activation Policy ID: 2049
MEID:
Activation Policy Description: US Cricket Communications Activation Policy
IMEI: 990001926058694
Applied Activation Policy ID: 2049
Part Description: IPHONE 4S 16GB BLACK
Applied Activation Policy Description: US Cricket Communications Activation Policy
Product Version: 6.0.1
Next Tether Policy ID: 2049
Last Restore Date:
Next Tether Activation Policy Description: US Cricket Communications Activation Policy
Bluetooth MAC Address: 30F7C5ACF098
First Unbrick Date: 02/18/13
MAC Address: 30F7C5ACF097
Last Unbrick Date: 02/22/14
ICCID:
Unbricked: true
Unlocked: false
Product Sold By: CRICKET COMMUNICATIONS INC
Coverage Status: Out Of Warranty (No Coverage)
Estimated Purchase Date: 02/18/13
Purchased In: United States