Smartband and lifelog accuracy

Hi,
I've been using smartband with the lifelog app for a couple of weeks now and i've also made some comparison with my Garmin Vivofit.
Some issues that i've noticed:
1. Smartband constantly record 10-15% less steps than the Vivofit per day.
2. Smartband is not recording my walking time. it will track the steps that i take but do not record it in terms of walking time. e.g. as of writing this post, i've clock about 1449 steps, but the walking time that is recorded is only 3mins, which equates to 108m based on the app. Running time at this point is at 0mins and 0 distance. i didn't jog today so i don't think it is possible to clock about 1449steps in 3mins. And given a stride length of 67cm, with 1449 steps i should be recording around 970m rather than 108m. hence there is definitely something wrong here.
is there a bug in the smartband or lifelog app such that it is not tracking correctly? because the difference is too inconsistent.
i've reset the smartband a numbers of times to try to resolve this but it is still not working. i've also tried to close the lifelog app or shut down the phone hoping that it will help to fix this problem but it is not working.
please advise on how to fix this.
secondly, i'm also having issues with the NFC connection. when i try to connect via NFC it will give many reading error messages before successfully connecting or syncing the data. it will also prompt that a new tag is collected and "the tag is empty, to use it download an NFC writer application."
really not sure what this means and how it should be fixed.
thanks.

Hi, thanks for your reply.
I don't really have connection issues with the smartband to the phone. I usually disconnect it and only sync it at the end of the day to track my movements. My issues is with the tracking accuracy compared to others fitness tracker. It is sometimes even 30% lower than other devices in steps count and walking time doesn't get recorded properly. Hence was wondering if it is connected the whole time would it improve accuracy which I tried for 1 day but didn't seem to help.
Also noticed that if you are linked the whole time to the phone it will affect the phone data connection. WhatsApp or Line messages will be sent in a delayed fashion, taking longer time to send.
Really not sure what else to do about it since I've tried resetting it a few times.
Thanks

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