"I have been researching the net for a reliable and fairly priced service to unlock my Samsung GS4 Mini I9195 LTE device. Most services are based on IMEI code generation but since I had the original USB cable, Samsung drivers and the phone was already rooted I did not mind to try the USB unlock service.

The pre-sales support of FastGSM was very good and I could watch the video tutorial without registration. After watching the video I decided to pay for the service and give it a go. Paying for the service was easy as 1, 2, 3 with my Paypal account.
Using the USB unlock service was very easy and straightforward however first I thought I did something wrong as I forgot the unregistered SIM in the phone.
I contacted to the customer service which was helpful and keen to help me. Finally after a reboot I found out the unlock process was successful and the phone is now provider free.

I would advise to keep the UnlockClient installation folder until you make sure the process finished with success as you might need the UnlockClientlog.txt in case of a failure to resolve the error.

FastGSM unlock service is highly recommended.
"

"Extrem super Service! Bei Fragen via Email bekommt man rasch Antwort.
"

"Wanted to unlock my smartphone. Made a payment and in 2 minutes had credit on my FastGSM account. It turned out that my smartphone could not be unlocked. Wrote a mail, they responded within 24h and refunded money.
Great service."

"I was reluctant to disable my anti-virus protection, so I set up an old XP desktop which hadn't
got internet security on it.
Downloaded O.K., and followed the on-screen instructions.
Phone unlocked within 15 minutes.
First rate product. "

"Excelent Service, thamk you FastGSM."

"This service easy and inexpensive."

"Got my codes within 30 minutes..worked on the first one..very impressed and stoked..would recommend to anyone."

"Great, it toke 7 hours to get my codes but it worked great at the 1st try.
Im Very happy with the service.
Thank you FastGSM"

"Fantastico, qualche ora di ritardo ma efficace."

"Avoid,Avoid,Avoid.Bought a software unlock programme,did not work,their customer services r off the radar,it's tough contacting them.No phone no to call them,they r a really poor company to deal (try to),with.Avoid my best advice is simply Avoid them.Unlockcode4u are Way better."

"Worked like a charm on Xperia X10 Mini pro U20i, even with counter block already zero.
Funcionou muito bem no Xperia X10 Mini pro U20i, mesmo com já bloqueado para o número de tentativas por código. Desbloqueio feito por cabo!
Thanks FastGSM!"

"At first it did not work with Windows 8.1 but on another computer with windows 7 the result was super fast.
Thank you and I will rérérer fastgsm to all my friends."

"Just working ! Recomended "

"Very good and fast service. First I had problems to unlock by cable - but Thomas from FASTGSM had a solution promptly.
Can recommend to everybody. thanks. J.E.Kahr"

"Very happy with my Samsung unlocking. I went with the USB version of unlocking. I am not computer smart, but their step by step instructions are detailed and easy for anyone. They answered my question (via email) promptly and helped me along.
Thank You!"