I have a S8 that I purchased. I've just brought a new phone, but wish to give my old phone to my husband who is with EE. I have put his SIM card in my new phone and it works fine. I put it in my S8 and it comes up with a message to Enter SIM card unlock PIN. Which I do and it works fine. It then comes up with another message "SIM network PIN blocked. Enter SIM network PUK." I was told phone needed to be unlocked. I have an unlocking code but it doesn't work. Where / how do I enter the unlocking code?
