We only replace products with factory defects, this is when the device does not work after opening the package. ! So that you do not have unpleasant situations with this, you need to check its performance upon receipt of the goods. It is imperative to record a video of the unpacking and the smoking process itself, if a marriage is recorded on the video, then we will be happy to replace it with a working device. Important information: We have the right to refuse you a replacement if you did not record a video report of unpacking., When buying, the device worked, but after some time, for some reason, it stopped working (because the product is disposable), This was done due to the increase in fraud cases in which old devices were returned under the guise of new ones., If you receive the goods by delivery service, we ask you to open the device on VIDEO..