Recently I inherited an LG G4 smartphone that was locked to a carrier (Telus) and then it was permanently locked after 10 code entry attempts. So I found out how to get this fixed and want to share for anyone having the same issue.
Lots of searching on the net and all I could find is a few obscure posts that really didn’t help.
I have a solution that will work to unlock a permanently locked device!
You will need a confirmation email from your carrier. Contact your carrier and ask for a confirmation email showing your device IMEI and the unlock code.
So for LG (and I believe Samsung), they have a “Permanent lock” repair center that can reflash the motherboard. Once you have contacted your provider and requested this email you can contact the manufacturer to unlock the Permentantly Locked status and use your device on any service provider!
I just sent off my LG G4 to see if this is actually viable.