When you want to unlock the SIM from an iPhone, there are 2 different approaches.
iPhone SIM Lock Removal Request and iPhone IMEI Unlock.
Find out about both of them and use them accordingly.
Are you still trying to unlock your iPhone using other methods with no success?
Make no mistake, the Official IMEI Unlock method is the only effective and legitimate way to unlock your SIM unlock iPhone, blacklisted or not.
Read here everything you need to know about the Official IMEI Unlock method, also known as Factor Unlock. Read more