1. Navigate to https://sickw.com/
2. Click "Login"
3. Click the "Write here IMEI or Serial No." field.
4. enter the imei
5. Double-click the "imei. and copy it after you type it in just in case you need it again.
6. Click this dropdown.
7. Find iPhone Carrier- FMI & GSMA
8. Click arrow to sumbit
9. the first line of the report shows you the model name,
10. This is what the report looks like, Jot down Carrier
11. Make sure blacklist is clean
12. If iCloud is on than make sure you turn off icloud
13. Sim lock should show UNLOCKED if buying an unlocked phone, all other carriers will most likely show locked unless paid off.