Missing user agent, device category "(not set)"

[Romanavr]

I have a problem using this library.
For some reason, the user agent is always missing in GA4, so the device category in the report is always "(not set)"

I didn’t have such problems with UA, so I’m wondering what could be wrong?
From similar issues #8 and #29 I can see that right now there is no way to override UserAgent.
Therefore, I have a question, perhaps someone has encountered such a problem and found a way to fix it?
I would appreciate any help and food for thought.

[Fnizou]

Hi,
I have Open similar issue #37
I will try to add these values :
- User Agent Override
- Screen Resolution
- Viewport size
https://developers.google.com/analytics/devguides/collection/protocol/v1/parameters#sr
I'll let it run for 24 hours and I'll come back to you

[Romanavr]

Hi, I have Open similar issue #37 I will try to add these values : - User Agent Override - Screen Resolution - Viewport size https://developers.google.com/analytics/devguides/collection/protocol/v1/parameters#sr I'll let it run for 24 hours and I'll come back to you

I really appreciate it, thanks!

[Fnizou]

Outch, in Doc GA4

User Agent Override
There is no way to override the user agent in GA4.
https://developers.google.com/analytics/devguides/collection/protocol/ga4/ua-feature-matrix#user_agent_override

System Information
UA has optional parameters for system information like screen resolution, viewport size, and more.

In GA4, many of these parameters are automatically collected by the Google Tag (gtag) while others have been deprecated like Flash version. If you want to continue to collect this data, you need to create custom events and parameters.