@Tia123456 I'm sorry, but Fitbit doesn't allow third party apps on the Versa 4. To clarify further, there is no Fitbit model that can identify a fall or make an emergency call for you.
Laurie | Maryland
Sense 2, Luxe, Aria 2 | iOS | Mac OS
Take a look at the Fitbit help site for further assistance and information.
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