Checks the current carrier your device is locked to (Next Tether Policy) and SIM Lock Status. Next Activation Policy ID is also provided to assure that you are not receiving vague results, which you would find elsewhere.

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Sample:

Case 1: SIM-Locked
Model: iPhone XR 64GB Black A1984 US/Canada
IMEI Number: ###############
IMEI2 Number: ###############
MEID Number: ##############
Serial Number: ************
Manufacture Date: 2 Jan 2019
Unit Age: 1 year, 8 months and 16 days
Assembled In: Pegatron Shanghai, China
Estimated Purchase Date: 16 Apr 2019
Next Activation Policy ID: 2136
Locked Carrier: US T-Mobile Locked Activation Policy
Country: United States
SIM-Lock Status: Locked

Case 2: SIM-Unlocked
Model: iPhone 8 64GB Space Gray A1905 AT&T/T-Mobile/Global
IMEI Number: ###############
Serial Number: ************
Manufacture Date: 4 Jul 2018
Unit Age: 2 years, 2 months and 14 days
Assembled In: Foxconn, China
Estimated Purchase Date: 17 Aug 2018
Next Activation Policy ID: 10
Locked Carrier: Unlock
Country: United States
SIM-Lock Status: Unlocked
[For unlocked devices, the 'Country' field will reflect the country of purchase.]