A:Answer We are sorry to hear this. Yes you can use the bottle warmer without bluetooth. Just pick your settings using the LCD control panel. I'm surprised to hear that the app isn't working. Please contact our Customer Care team to discuss this further including letting us know what specific phone you're using so we can troubleshoot it. You can reach them at 888-396-6552 or babybrezza.com/contact. Also make sure that your phone is near the warmer since it connects with bluetooth, not WiFi. Thanks. Since all of our appliances come with a 1 year warranty, we'll make this right for you.