Hi all, I am hoping someone can assist me w this: I am an ATT customer and have been seriously looking at buying an iPhone X off of eBay. however I have noticed that almost all of the listings say “clean IMEI. for use on the ATT network only. Cannot be unlocked”. After doing some reading up on this I believe the cannot be unlocked part means that while the phone hasn’t been reported lost or stolen, it means there is a balance still owed on the acct/device. Can anyone confirm this? Obviously if that’s the case I do not want to take a chance on buying one then for whatever reason the previous owner decides to stop making payments and I end up w an unusable, expensive brick. So can anyone confirm this is what that means if it’s mentioned in a listing? Any help would be appreciated! TIA!