dear mate:- if you would like to find out witch version is the phone there is two way to find out
1- if you have the phone you can just dial *3001#12345#*SEND and then at the very bottom you will see VERSION click on it if any thing higher than 39.0 can't be unlocked
2- if you want to buy iPhone and would like to find out what version is the phone you don't need to open the box just look at the back of the box you will find S/N in the back of the
phone all what you need to look at the forth and fifth number if there are 38 or lower that's mean you are good to go if any thing is higher than 39 there will be no solution at the moment for unlocking GOOD LUCK
best regards
www.mygswireless.com