You will receive Network and Defreeze codes only. If you phone is region locked do not order this service.
All Samsung models supported locked to any network worldwide, even if not for all codes might be found.
No refund if phone is not asking for unlock code with a sim from different carrier or if the phone is Region locked and needs RGCK code.
Will be able to refund for that imei from phones that ask for unlock code when turning on with a different sim and for wich, you provide a video proof like below:
youtube video showing the following
1.Factory reset the phone
2.Turn on the phone with a sim from a different carrier
3.When asks for unlock code to insert Defreeze code
4.Will not be accepted, but is normal, just insert Network code and will work (and normally should work)
5.Type *#06# to show imei