Step accuracy on Fitbit Ionic

[Rajubhayana]

Yesterday I did around 8000 steps but next day it is showing I did only 3100 steps, today I am still on bed and it shows 35 steps, want to know reason of error

Moderator edit: updated subject for clarity

[MarreFitbit]

Welcome to the Fitbit Community @Rajubhayana! Are you losing previous steps tracked every day you check the app? Or you feel that your Fitbit Ionic is not tracking your steps accurately?

Fitbit devices have a finely tuned algorithm for step counting. The algorithm is designed to look for intensity and motion patterns that are most indicative of people walking and running.  When working at a desk, cooking, or doing other arm movements, a device on your wrist can pick up some extra steps if it thinks you're walking. Many of these situations—such as working or cooking—do include a few steps in-between stationary periods so the device tries to give you credit for those steps. For the vast majority of customers, the amount of stray steps accumulated is negligible when compared to the entire day. For a more technical explanation, see How does my Fitbit device count steps?

If you're doing something like pushing a stroller or shopping cart, your wrist-based device will count your steps but the total may be slightly lower than usual.

Your device has been tested against driving, buses, trains, and other public transportation and should not give you extra steps when you’re traveling under normal conditions. On bumpy roads or in a car with a stiff transmission you may get extra steps. Though a few extra steps won't affect your trends, it's possible to log a driving activity and remove the steps from your account totals.

If you feel that your step count and distance are inaccurate, first make sure the wrist placement settings are correct. Next, double check that you entered your height correctly. Since we use height to estimate your walking and running stride lengths, you may want to measure and manually adjust these values if your legs are longer or shorter than average. 

Sometimes, when you start walking you may notice that your steps may not update on your device right away. After about 10-15 continuous steps, you'll notice the steps catch up and start updating in real-time with each step you take.

After taking the above into consideration, please try a step test:

1. Put your wrist-based tracker on your wrist.
2. Walk 100 steps, making sure to count a step each time one of your feet hits the ground.
3. Pause, then check your tracker to see your step count.