Step 1. Get up-to-date Update the Fitbit app. For instructions, see How do I use the Fitbit app? Make sure your Fitbit device is up-to-date. For instructions, see How do I update my Fitbit device? Make sure you installed the latest version of iOS. On your phone, tap Settings General Software update to see if an update is available. Step 2. Verify your phone settings Open the Settings app on your