This service provides NEXT TETHER info only.
It allows to see which carrier the phone is locked to or if it's unlocked.
If the phone is locked, it will shows which carrier it's locked to.
Sample reports below:
Model: iPhone 5 Black 16GB
Serial Number: C38KQSDRFH19
Carrier: US AT&T Puerto Rico and US Virgin Islands
- This one is locked to AT&T USA
Model: iPhone SE Rose Gold 32GB
Serial Number: CDX3T7NUQHTVV
- This one is unlocked