It Is after all sync'd up to their "Cloud" and so should be able to sync back down if you change phones or need to do a full reset. I use dexcom g6 with android 13. When I start the app on my phone it gives a warning about android https://www.saludcapital.gov.co/sitios/VigilanciaSaludPublica/Lists/Contactenos/DispForm.aspx?ID=2972663