Speed data not getting received it 0 every time?

Hi,
I am new to traccar , recently I setup the environment using windows server 2012 R2, with MYSQL database. We observe that speed data is always 0, I am using traccar client in Android version 10 (Samsung Galaxy S10 ), is there any setting required for this or only specific device supporting to get the speed data? Thanks

1. What location accuracy are you using?
2. Are you sure you have a GPS fix?

1. I am using Medium accuracy.
2. Ya GPS is fixed and receiving the longitude , latitude , altitude with accuracy some thing like 10.20, 13.98 etc...... data

1. Medium accuracy doesn't use GPS.
2. You can't have a GPS fix if you don't use GPS.

With medium accuracy you will get network location (based on cell towers and WiFi). Network location doesn't include speed value, so you always get zero value.

Thanks for you prompt response.