Does it have cydia installed? if so then it's jailbroken and potentially software unlocked.
No biggie and as above if it works on telecom it will work on any carrier, but if it is jailbroken and network unlocked then remember updating the firmware will remove your network unlock and it wont work with any carrier.
I get a lot of people coming to me who buy an iPhone on trade me and then try to upgrade it finding that they lose their network unlock.
You can ignore all of the above if you don't have cydia on your springboard because you'll have a network unlocked phone.
Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly
to your computer or smartphone by using a feed reader.