I had a Galaxy S8 that I had not used in over a year because the screen smashed. I had it with Cricket. I got the screen repaired and took it to another carrier but Cricket had it locked. I called them but they kept giving me the runaround. I found Cellunlocker online and they sent me the code in 24 hours. Now the phone works perfectly with a new carrier.
Pros and Cons:
Bottom Line: Yes, I would recommend this to a friend