I have a phone I previously bought from at&t. I tried to activate the phone but couldnt afford to. So I’ve been using it for mostly internet. Recently I got my q-link Sims card, and was able (after months) to get my phone unlocked from my previous carrier. I went to proceed with putting my new sims card (q-link) into my phone. It asks for a " sims card nextwork pin code". I typed what was on the back of my Sims adapter kit. It says it’s incorrect and that my phone is now locked. Any help would be great.