<prompt> Human: First off, Im not sure if this fits solidly within the purview of rpersonalfinance, but it seems like its not a bad place to start.My sister just exited a relationship with a controlling, verbally abusive, boyfriend. I didnt like the guy from the beginning, but she was blinded and didnt see anything to worry about. They were together for less than a year and started dating shortly after meeting. They are both in their early twenties.Perhaps a month ago, boyfriend decides that he needs a new phone so that he can start driving for Uber. He cant afford to buy a phone outright and because he has screwed up his credit, no company will give him a phone on a payment plan either. Im not sure of the particulars of how the situation transpired, but the end result is that my sister is primary on a phone plan for the two of them. This includes being the signer on two top of the line Android phones.Cut to now.They have broken up and he is neither able nor willing to pay off his phone so that the contract can be severed. We have offered to take the phone and take over his half of the payments, but that is not an acceptable option to him either. I am inclined to think that he is trying to twist the knife as well as get the phone for free. I am all too well aware of the fact that if he wont pay for his phone or return it, my sister is the only one responsible for it. If it comes down to this which looks very likely she will end up paying and hopefully it will end up serving as a very clear lesson for her moving forward.Here are my questions:1. Is there any recourse here that I havent thought of?2. Is he under some kind of obligation to return the phone if she requests that he do so?3. If it comes down to it, can we disable the phone remotely I think it is the latest Galaxy? I would rather brick the phone than let him get away with it. If so, would he be able to circumvent this by jailbreaking it?The phone ostensibly has a significant value to him, so I cant help but feel like we have some kind of leverage in this situation.-Im not sure what network they have, but Ill find out and post an edit.Thanks in advance for any input here.  <response>: Report the phone as lost to your provider and just ask them to turn off the service for that device. You shouldnt have to cancel the phone line itself so you dont have to pay to get out of the contract.For example, I know ATT can disable my sim card so my device is unusable. Im not sure if they can actually brickthe device though. 