I'm diabetic, too. If I had to use a continuous glucose monitoring system, I'd be watching YouTube videos from Dexcom and others on how to use their system with Android. I'm terribly happy to help you troubleshoot, but I'm going to need more information about the steps you've already taken to pair the monitor with your phone, have the monitor connected to your app, etc. If I have some time this afternoon, I'll try to do some of this research, too. Additionally, it is highly likely that there's someone in your endocrinologist's office who should have helped you set all of this up prior to you walking out the door. Especially if your endo is the one who prescribed the Dexcom.