Samsung is set to release a software update for its Galaxy Note 7 that will prevent the device from working.
The handset was discontinued two months after launch following a string of reports about exploding batteries and other faults.
Although thousands have taken advantage of Samsung’s Galaxy Note 7 exchange programme, many consumers are still thought to be using the phone.
Samsung’s latest update, which is set to start rolling out in the U.S. over the next few days, will stop the Galaxy Note 7 charging, forcing owners to swap their faulty phones for an alternative model.
U.S. network says it will not support the software update, saying it will leave many customers without a working handset.
Previously, Samsung has released updates designed to limit the Galaxy Note 7s battery life, in an attempt to prevent the phone from overheating.
A new Samsung Galaxy S8 model is due for release in early 2017, aimed at superseding the Galaxy Note 7.