Hello dear support. I bought the new iPhone 7, but I want to unlock it for Europe. I ordered online imei checker and my carrier is US GSM Service Policy. How can I know whether my iPhone is locked to AT&T, Verizon, Sprint, T-Mobile or other US carrier? I read online that in the most cases it's AT&T, but I submitted it for unlock and they rejected my imei. They told me that it's not locked to AT&T. Please help me. Below is my complete imei details:
Model: iPhone 7 Plus 256GB Black MM A1661
IMEI: 359178071226287
Serial: F2LSFYL7HFY2
Purchase Date: 2016-10-31
iCloud Status: CLEAN
Activation Status: Yes
Repairs and Service Coverage: Apple Limited Warranty (315 days left)
Coverage Start Date: Mon Oct 31 2016
Coverage End Date: Mon Oct 30 2017
Telephone Technical Support: 90 Days Support (41 days left)
Support Start Date: Mon Oct 31 2016
Support End Date: Sun Jan 29 2017
Product Sold by: BEST BUY
Initial Carrier: US GSM Service Policy
Simlock: Locked