A defect was discovered in the Dexcom G6 and G6 Pro Android US CGM App version 1.15.0 that may cause the app to shut down unexpectedly.

http://www.fda.gov/medical-devices/medical-device-recalls-and-early-alerts/continuous-glucose-monitoring-software-correction-dexcom-issues-correction-dexcom-g6-and-g6-pro