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vivofit 3 Displays a Blank Screen or Experiences Short Battery Life
If your vivofit 3 is displaying a blank screen and will not respond to a button push, it may be necessary to change the battery in the device. We offer detailed step by step instructions here> Replacing the Battery
If the watch will still not turn on after a battery change or if the replacement battery does not last very long, it will need to be exchanged. You can request for an exchange using the following tool: Garmin's Online Exchange for the vivofit 3