I have have just took over my father's phone which he was EE but tried to unlock so it would take my O2 sim card. Followed all the steps (well I thought I had) but now it's saying enter mck l. Network unlock code blocked. Too many incorrect attempts. I am confused 🤔 what do I have to enter and do I get this from O2 or EE as this was a contract phone phone from EE, but my dad has now upgraded. Please help.!!
