My Charge 3 doesn't turn on

[panei]

My Charge 3 haven't used almost two months. Location changed frequently and was not used. For now, the power button vibrates and the clock does not turn on How to do it?

Moderator edit: added label

Moderator edit: updated subject for clarity

[EdsonFitbit]

Welcome to the Fitbit Community, @panei.

I'm sorry to hear about the difficulties you experienced with your Fitbit Charge 3. Thank you for the information provided.

I would recommend restarting your Tracker by following these instructions. In addition, you can perform a long restart:

1. Connect the device to the charging cable. 
2. While the device is plugged into the charging cable, press and hold the button down for 15 seconds. 
3. The device turns on and shows a battery icon. Two vibrations occur: first a short vibration, then a medium vibration. 
4. The device turns off.
5. The device turns on and shows a progress bar and short vibrations occur. The progress bar completes. Note: A total of 7 short vibrations occur. 
6. Remove the device from the charging cable. The device shuts down.
7. Important: Plug the device into the charging cable again. 

If you haven't done so, please try to change your Fitbit device's clock face:

• From the Today tab  in the Fitbit app, tap your profile picture > Charge 3
  tile.
• Tap Clock Faces.
• Browse the available clock faces. Tap a clock face to see a detailed view.
• Tap Install to add the clock face to Charge 3.

Hope this helps.