How do I see users by operating system in GA4?

Run a GA4 report with operatingSystem as the dimension and activeUsers as the metric. Pairs well with the browser breakdown when you're scoping compatibility testing.

The report

FieldGA4 API name(s)
DimensionsoperatingSystem
MetricsactiveUsers

Ask it in plain English

Break down active users by operating system for the last 28 days.

Why it matters

OS alone rarely justifies a compatibility decision on its own - it's most useful crossed with browser, since two people on the same OS but different browsers can hit completely different rendering issues. Pull this alongside the browser breakdown rather than reading it in isolation.

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FAQ

Which GA4 fields does "How do I see users by operating system in GA4?" need?

Dimensions: operatingSystem. Metrics: activeUsers. These are the real Google Analytics Data API field names, so the same report can be built in the GA4 UI, the API, or through Caybl.ai.

Can I just ask "Break down active users by operating system for the last 28 days." instead of building this report?

Yes. Once Google Analytics is connected through Caybl.ai, ask "Break down active users by operating system for the last 28 days." and your agent runs the report for you - no need to know the operatingSystem or activeUsers field names above.

Does asking about operatingSystem change anything in my GA4 property?

No. Running this report doesn't change anything in your GA4 property. Caybl.ai's Analytics scope does allow two narrow write actions elsewhere - marking a key event and linking a Google Ads account - but a report like this one only reads data.

Sources

  • Google Analytics Data API - dimensions & metrics reference (official Google documentation)