Lost and changed historical data on fitbit app

[sdcpaman]

Over in Versa 4 forum lots of complaints about historical data changing or just being lost.  Personally my July numbers (over 300,000 steps and almost 10,000 per day average) yesterday, on August 9th, changed to 200,000 steps.  Every day changed like my whole month of data was replaced by someone else's month.  Yesterday, I went to sleep with my watch and app showing almost 13,000 steps.  Woke up this morning and yesterday now show 5,300 steps.  No explanation just completely changed yesterday's numbers.  Lots of similar stories on Versa  4 forum, but no moderator comments.  Anyone here with similar experiences? 

[Quoll]

This has been going on for quite a bit now. People on Reddit are continuously reporting the same. Support is providing no resolution. Paid customers are left with this critical issue. Just a random selection (I can keep on adding sources if desired, no shortage of them; just trying to help the developers gain an insight into the widespread scale of this issue affecting many paid customers):

• https://www.reddit.com/r/fitbit/comments/1mn6csg/disappearing_steps/ 
• https://www.reddit.com/r/fitbit/comments/1mmonzn/where_did_all_my_steps_go/ 
• https://www.reddit.com/r/fitbit/comments/1mma657/ok_what_is_going_on/ 
• https://www.reddit.com/r/fitbit/comments/1mm5n2g/fitbit_just_ignoring_10k_stepsexercise_today/ 
• https://www.reddit.com/r/fitbit/comments/1mlvt65/my_steps_arent_stepping_the_same/ 
• https://www.reddit.com/r/fitbit/comments/1mlulv3/ios_app_just_loses_all_steps_data/ 
• https://www.reddit.com/r/fitbit/comments/1ml5v3s/lost_steps/ 
• https://www.reddit.com/r/fitbit/comments/1ml1o61/reduced_steps_for_previous_months/ 
• https://www.reddit.com/r/fitbit/comments/1mky90d/steps_just_disappeared_overnight/ 

[pjpjr]

Many here lost the view of their data, with what appears to be version 4.48 of the Android App.  However, Support worked on the issue and that data is now visible again for most.

Personally, I have not been tracking most data specifically enough to know if the restored view of the data is exactly as it was before.  

In general, data loss is a bit of a rarity in 2025.  More often the view,  and sometimes summarized views, is what is has gone awry, leading us to think data has been lost.  

What is incredibly useful for Support during such issues is absolutes, like versions and devices, and points on the relative timeline indicating when something changed.

Only my experience and yours may be different.

[lholgate]

Starting Aug 9th, all my historical data is gone.  Each night I end with over 10K steos, and each morning shows 0 for the previous day.  Last week has been replaced with random numbers between 0 and 500.

[peppygirl]

I still have a Fitbit One that continues to work and I do not want to change.  However, there has been no history for this device since Aug 26 of 2024.  Yes, I said 2024.  Back when this problem started, we One users were told that it would be fixed.  That never happened.  I have to sync before midnight each night and manually record my steps and miles then update a spreadsheet that gives me my lifetime steps and miles.    If I look at my phone at 12:01 AM and go back to yesterday, it says zero.  But I know that data is being saved somewhere, because I still get the weekly e-mails with steps and miles.    I have made a suggestion that the lifetime steps and miles be added to the weekly e-mails.  It would even be better if the e-mail had total steps and miles listed for each day instead of just a weekly total and only steps listed for the "best day".  If they can list one day, they can list all seven.   I miss the way FItbit was in the past.  A spreadsheet works for me but I should not have to manually track my history.  I hope they fix your problem.

[lholgate]

Update -

After reinstalling the app and waited 2 days, I tried contacting support.  Oddly, as soon as I opened the support chat all my data returned.👍

[pjpjr]

@peppygirl A Fitbit One; that is most impressive!  I was was extremely happy with the 5+ years I got from my Charge 4.  I agree that you should not have to manually track your history and hope that this issue will be resolved for you.  I would think Fitbit does as well.

There is a positive in what you wrote, being  that the most granular data has not been lost.  Instead it is something with the summary, or summary process, of this data which has broken.

[pjpjr]

@lholgate An educated guess, but I surmise it was your 2-day wait and good timing.  I tried everything I knew of, except reinstalling the app, to resolve and to help determine what the root cause of this issue is.  From all the the Topics I am following, once the issue is resolved, no granular data has been lost.  It has only impacted the views of one's summarized data.  Also my personal non-Fitbit related experience has been that it may take a little longer for summary intervals (week, month, year, etc.) to be resolved.

If there are Android App users still experiencing issues, what helps Support is reporting your Fitbit System version, your Fitbit App version, your Android OS version and when you first noticed the issue occurring.  There is likely benefit if you include your local time zone, or UTC, when you report times.