Hello and welcome to the Fitbit Community @Judaskiss
I understand your having syncing issues. First let’s make sure your phone is compatible with the new Fitbit app. You can view the compatibility list here: https://help.fitbit.com/articles/en_US/Help_article/2315
If your phone is indeed compatible I would suggest restarting your Fitbit Charge 3. You will not lose any data doing this.
Here’s how:
- Plug the charging cable into the USB port on your computer or any UL-certified USB wall charger.
- Clip the other end of the charging cable to the port on the back of the tracker. The pins on the charging cable must lock securely with the port.
- Make sure the button on your tracker is aligned with the button opening on the charging cable. You’ll know the connection is secure when the tracker vibrates and you see a battery icon on your tracker’s display.
- Press and hold the button to restart your tracker:
- For Charge 2—press and hold the button on your tracker for 4 seconds. When you see the Fitbit logo and the tracker vibrates, the tracker restarted.
- For Charge 3—press and hold the button on your tracker for 8 seconds. Release the button. When you see a smile icon and the tracker vibrates, the tracker restarted.
- Unplug your tracker from the charging cable.
😃 Hopefully this resolves your issue and answers your question. If I did indeed help resolve your issue could you please tap “choose as best answer” under my post? Doing so helps others who come to this Community seeking answers to questions similar to your own. I’d really appreciate it
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