Checks the current carrier your device is locked to (Next Tether) and SIM-Lock Status. If your device is SIM Unlocked, then no carrier will be provided. The GSMA Blacklist status and Blacklist/Cleaning History are also included. Serial and IMEI2 numbers are supported too.

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Sample:

Case 1: SIM-Locked
Model: iPhone 8 Plus 64GB Gold [A1864]
IMEI: ###############
Serial: ************
Blacklist Status: BLACKLISTED
Blacklisted by: Sprint
Blacklisted on: 2019-06-14 06:36:42
Blacklisted Country: United States
Carrier: US Sprint/MVNO Locked Policy
SIM-Lock Status: Locked
[A blacklisted device may not work in that country, even if you unlock the carrier.]

Case 2: SIM-Unlocked
Model: iPhone 8 Plus 64GB Gold [A1897]
IMEI: ###############
Serial: ************
Blacklist Status: CLEAN
Carrier: Unlocked
SIM-Lock Status: Unlocked

Case 3: Cleaning Records
Model: iPhone 8 256GB Silver [A1863]
IMEI: ###############
Serial: ************
Blacklist Status: CLEAN
Blacklisted by: T-Mobile USA, Inc
Blacklisted on: 2019-06-20 20:49:23
Blacklisted Country: United States
Removed by: T-Mobile USA, Inc
Removed on: 2019-06-27 22:49:26
Removed Country: United States
Carrier: Unlocked
SIM-Lock Status: Unlocked