will the fitbit work on an apple 4s iPhone

Fitbit Flex Wireless Activity + Sleep Tracker

Fitbit Flex Wireless Activity + Sleep Tracker

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1 Answer from the Community

  • Answer

    Yes. Fitbit connects to your smart device via Bluetooth LE (Low Energy). The iPhone 4S was the first smartphone to adopt Bluetooth 4.0 (which includes the LE technology) when it was released in 2011.