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Mobile
Mobile Network Test
Live readout of your cellular or wireless connection — effective type, downlink estimate, RTT, and data-saver state.
Verdict
Unknown
Effective type
—
Connection
—
Downlink
—Mbps
RTT
—ms
Max downlink
—Mbps
Theoretical maximum reported by the OS
Data saver
Off
When on, sites should serve lighter assets
What do these numbers mean?
What is 'effective type'?
A bucketed quality estimate (slow-2g, 2g, 3g, 4g) computed by the browser from recent throughput and latency samples. It reflects how the link feels, not the radio type.
Downlink vs Speed Test?
Downlink is the browser's rolling estimate. For a precise number, run our full Internet Speed Test which actively measures throughput.
Why does data saver matter?
When data saver is on, well-built sites serve lighter assets and skip prefetches. Apps and CDNs use this signal to save you mobile data.
Why does my iPhone say 'Unknown'?
iOS Safari doesn't expose the Network Information API. The reading is still accurate — it just isn't available on Apple's browser.
What's next
Runs entirely in your browser. Nothing is sent to our servers.