Phone is barred - does that mean I can't track it
My iPhone 5 got stolen, so I reported this to my network provider and they have barred both my phone and sim. First of all, I would like to know what this actually means? If they were able to guess my passcode, I assume they have access to my music, photos etc but won't be able to use the internet or text/call.
Secondly, does this mean that I won't be able to track it when they turn it on, since it won't be able to use the internet.
Another option on find my iPhone is to erase the phone - does this mean that the thief will now have a blank phone and will be able to use it as their own if they are able to unbar it? However, if I don't erase the phone, is there a chance that they may be able to use my apple account to buy things if they did manage to guess my passcode and unbar the phone?
Sorry if these are obvious questions - any help would be appreciated!
MacBook Air, iOS 7.1.2