I used them and never got my phone unlocked nor my money back. I just get excuses from the
Like "we are doing a system maintenance" Or "it will be ready in 7 to 10 days. It's been over 2 months.

Be careful with iphoneapprovedunlock
Dont fall in the trap of the 17$ initial cost. Once you pay this, then they have power on you. They tell you if you want your phone unlock, you need to pay an extra 63$, and you dont have a choice. But even after you pay those 63$ extra, they keep asking you for more information and money. And you already paid 80$ so you have no choice to continue with them or loose that money. They dont answer the phone or give you a human response by email, its always you unlocking process is about to get completed. Its a scam big time!

Doctorsim.com cant recommend them highly enough, even the one phone they couldn't unlock in the usual way they sent me a sim sticker that worked to bypass the lock, and all for free by express delivery, and also would have refunded me the full amount had I requested it. Two other phones I have unlocked with them were done without any issues.