Android Client 10.1.2 Irregular location updates

Hi,

I'm testing Traccar Client 10.1.2 on two Samsung Android phones. I need a fresh GPS position approximately every 60 seconds, including when stationary and with the screen locked.

Both phones are configured with High accuracy, 60-second interval, distance 0, stop detection off, and unrestricted battery access.

Initially, tracking works almost every minute, but after some time the intervals become irregular, sometimes reaching 5–10 minutes. The client logs confirm gaps between Location accepted events, while uploads generally succeed.

Wake lock didn't help.

I've read that Highest accuracy may improve reporting, but I need to stay around 1,440 reports per device per day.

I'm now testing Use system location with High accuracy.

Has anyone experienced this? Is there a recommended configuration for reliable 60-second tracking without using Highest accuracy?

Thanks,
Sal

Stationary updates are expected to be around 10 minutes. That's a limitation of job scheduler on Android.

Thanks Anton.

I have Stop Detection disabled, so I understood from the documentation that the client should remain in moving mode and use the configured 60-second interval instead of the stationary heartbeat.

Does the 10-minute Android scheduling limitation still apply in this configuration?

I am also seeing 5–10-minute gaps while driving and walking, not just when stationary.

No, if you have stop detection disabled, then it should not switch to stationary state. Then the issue is just OS limiting updates for some reason.

I tested Use system location with High accuracy, a 60-second interval, stop detection off and Wake lock on.

Unfortunately, it didn't help. During a 23-minute stationary test with the screen locked, the client recorded only six positions, with gaps of up to 10 minutes.

The log confirms AndroidLocationSource was started and Wake lock acquired. Uploads succeeded.

Is there a way to identify which Android restriction is preventing the regular location updates, perhaps through ADB logs or another diagnostic?

Thanks!

Have you checked if you're actually receiving GPS locations during that time?

Not independently. I've only checked Traccar's Location accepted logs and the server's position history.

What's the simplest way to check whether Android is actually obtaining GPS locations during those gaps? Would you recommend a separate GPS logging app or ADB?

Check accuracy value in Traccar.

I checked the accuracy values in the CSV for the 23-minute test.

The six positions had accuracy values of 28, 60, 38, 40, 42 and 11 metres.

Interestingly, the last position had 11 m accuracy despite arriving after a 10-minute gap.

Does that help narrow down the cause?

All of those are probably not GPS locations with this low accuracy, so that would explain gaps.