Perhaps I am a little too cautious, but I don’t know what the unlock codes look like, and I don’t want to be a fool and brick the phone by doing something obviously stupid.
You are one of the few who have actually unlocked a dumb phone in real time.
Could I be so bold as to ask if you would be willing to find some unlock codes for a Samsung GT-E3210 dumb phone made about 2013, that YOU would be willing to use if it was YOUR phone ?
I would be very grateful to have the opinion of someone with success in this area.