How do I know that my App is working? 09 September 2020 03:36 Updated If the main screen on your App says “Your app is active’, it means your App has been set up successfully. Related articles How long should I keep the App running? Do I need to keep my phone's Bluetooth turned on all the time? How do I set up the TraceTogether App? Would keeping TraceTogether running all the time drain my battery quickly? Who can use the TraceTogether App? Which mobile phones are supported? What happens if I was in close contact with a COVID-19 case?