Unlockunit took 3 full days to provide Google e-instructions to unlock my phone using an active T-Mobile SIM card, which I don't have. When I told them I didn't have a T-Mobile SIM they told me to borrow one. They NEVER provided a code, and refused refund when I requested they stand behind their "100% Money Back Guarantee" to unlock my phone.
My phone REMAINS LOCKED. I already knew I could use a T-Mobile SIM to unlock it, which is why I used their service in the first place. My phone ALREADY qualified for a unlock from the carrier, IF I had a T-Mobile SIM--it was the promise of an unlock code (no SIM required) that prompted me to use their service.
I now have to dispute the transaction with my credit card company. Whether Unlockunit unlocks your phone or not, they will take your money. Their "guarantee" is trash. Use another unlock service.