If heart rate data is not accurate on the Redmi Smart Band 2, please refer to the following steps:
1. Please check your wearing method. You can wear the band near the joints, and tie the strap tightly but not too tight. Wearing the band too tightly, raising your arms, making fists, etc. will affect blood circulation, thereby affecting the accuracy of heart rate data;
2. Clean your band gently to ensure there are not too many sweat stains on it. Too many sweat stains on the band will also affect heart rate data;
3. Check your skin condition. Too dry skin, skin scars, tattoos, etc. will affect heart rate data;
4. Sync the band with the Mi Fitness app by opening the Mi Fitness app and going to [Device] >> Look for and tap [Sync]. After syncing, restart both the band and your mobile device to refresh the connection;
5. Ensure that the heart rate monitoring feature is not turned off by opening the Mi Fitness app and going to [Device] >> [Heart rate] >> [Continuously monitoring] >> check it here;
6. Please check that you have selected the correct region by opening the Mi Fitness app and going to [Profile] >> [Settings] >> [Region]. In the meanwhile, make sure that the region on your smartphone is the same one as your band’s;
7. Please ensure the Mi Fitness app is updated to the latest version by opening the Mi Fitness app and going to [Profile] >> look for and check [Version];
8. Please check if the device’s firmware is updated to the latest version by opening the Mi Fitness app and going to [Device] >> [Update] >> check it here;
9. Please reinstall the app and see if the issue persists;
10. Please restore the band to the factory setting by entering the main interface of the band and sliding up from the bottom with one finger >> [Settings] >> [System] >> [Factory Reset] >> [√].
We hope the above information is helpful. If the issue still occurs, please reconnect the band, please open the Mi Fitness app and go to [Profile] >> [Feedback] >> [Other]. After submitting the user feedback, please have some patience and wait for the future updates.