There are several factors that can cause your Fitbit Sense to not turn on. It could be due to the battery not having enough charge, a software glitch, or even a hardware issue. To fix this you will ...

Restart > clean connections > use a different charger > replace the cable > bring the phone closer. Check Bluetooth connection > disconnect other Bluetooth devices > restart Fitbit app > check for ...

Fixes for drained battery, update issues, dirt, weak connections, and more Restart > clean connections > use a different charger > replace the cable > bring the phone closer. Check Bluetooth ...