Device & browser information
Read basic browser capabilities, battery and network information where exposed.
Request the readout when ready. Values are displayed locally and are only exported if you download a report.
Enable JavaScript to run this interactive test. The guide and methodology below remain available.
How to run this check
Request the readout when ready. Values are displayed locally and are only exported if you download a report.
Understand the result
PASS describes a received signal or your recorded observation. WARNING calls for another check. USER REVIEW REQUIRED means a measurement alone cannot decide. An unavailable API or denied permission does not establish hardware failure.
What this cannot tell you
Battery charge is not battery health. Network values are browser estimates, not an active speed test.
If something seems wrong
Use operating system or manufacturer diagnostics for battery capacity, storage and internal hardware.
Find troubleshooting help →Good to know
Is anything uploaded?
Raw diagnostic input and media are processed locally. Results remain in this page’s memory until you download a report or leave. Hosting requests still reach the site host. See the privacy policy.
Does a pass guarantee my hardware is healthy?
No. It records behavior observed in this browser session. Intermittent faults, internal components and operating-system restrictions need further investigation. See our methodology.