I have used cellunlocker.net like 6 or 7 times over the last couple years. Most recently 2 times in 3 weeks. Generally speaking I would get my unlock code within 12 hours but the last couple transactions I got them within 2-3 hours. Very easy process to order and get the unlock code.
The unlock code instructions look overwhelming at first, but READ THEM. Last two times I ordered an unlock code from them it didn't work "out of the box" but listed way below (like page 40 lol) of the email, it has "troubleshooting instructions" and other steps to unlock it. Sure enough my galaxy s3 needed me to type in some *# codes, and reboot before trying the unlock code again.
Every code I have gotten from these guys has worked, and considering my most recent I have gotten in a couple hours, I couldn't be happier. Except for.
The price. Come on =) haha, drop it like $5 or $10 =)
But I'd rather pay your price and know im getting a 100% good unlock code instead of getting ripped off by all the scammers out there.
The website might be ugly, the email might be overwhelming, but the service is great.