My brother's old Samsung went on the fritz... it was suffering the dreaded "bootloop". This happened while he was spending the Holidays with my wife and I... He started freaking out because he depends on his phone for his work. I told him to just head back to the cellular store of his carrier. My brother explained to me that his cellular plan was some confusing "pay as you go" plan where he could use any "unlocked" phone just as long as it had a sim card. It was a good thing that I had an old Samsung S5 but it was dedicated to AT&T. I went online to see if I could unlock the phone and Cellunlocker.net showed some promise. I told my brother we could try Cellunlocker but there was no guarantees that it would work because there were some mixed reviews. We decided to go for it and by the time I woke up, Cellunlocker.net had delivered the email explaining how to unlock the phone as promised. It was easy, especially with the Youtube video that they provided. I highly recommend Cellunlocker.net without any hesitation... Thank you, Cellunlocker!