The device diagnostics feature of IQOS app is a self-diagnostic service that we offer to quickly solve any problem that might be related to the functioning of your device such as light blinking, no aerosol delivery or device not working issues. If your device is defective, go to the
IQOS app page to download your IQOS application version, then select your device in the app, choose the issue you want to solve and start the diagnostic tool by following our step-by-step guidelines till the end. If your problem persists, you will be redirected to our Customer Care for further support.