Your Fitbit may act reliably most of the time, but you’ll need to know how to unpair and reset it if it starts acting up. There are also occasions when you may want to give your Fitbit tracker ...

While it's not impossible for a misbehaving battery to need a replacement ... Also, do not attempt to charge the Fitbit while ...

To reset a Fitbit Flex, you need to have an official Fitbit charger, a USB power outlet, and a standard paperclip that has been unfolded to free up a straight segment (or a similar tool).