Unlock AT&T Motorola Razr V3 Cell Phone for Jamaica Digicel Sim Card?

I'm part of a mission group that goes to Jamaica and I have received a request from an orphanage worker to bring a Razr V3 phone to replace his broken one. I found a seller with cheap used AT&T Razr V3 phones but I want to make sure they can work in Jamaica. From what I understand I need to get an unlock code and I see various options with a fairly wide range of prices. First off does it matter if its the $4 option or the $15 option? Will any of them work if I don't currently have any service on the phone? If I get it unlocked will it just work when I drop in a Digicel sim card with minutes once I'm in Jamaica? Thanks for your help!

I am not aware of the one that you have said. I suggest you can approach unBBlock.com and specify the country,locked network of phone.Based on the availability you can get the permanent unlock service along with free instructions.