PhoneVitals

Plug in an Android phone with USB debugging enabled and PhoneVitals collects
its specifications, checks that the device is consistent with itself, and
measures the condition of its components.

- Authenticity: IMEI check digits, agreement between the identities the
Android partitions declare, Verified Boot and bootloader state, Samsung
Knox fuse, and hardware key attestation from the secure environment.
- Health: battery cycles and remaining capacity, internal storage wear,
real CPU, RAM, storage and display figures read from the kernel.
- Functional tests and live sensor charts: accelerometer, gyroscope,
magnetometer, light, proximity, barometer, GNSS satellites, touch.

No root is required and nothing is installed on the phone: a small helper
runs from a temporary folder and is removed at the end of the session.

PhoneVitals is an aid to understanding a phone's condition, for example
before buying or selling it. Its results are indicative and provided as is,
without warranty of any kind; they are not a certification, and the authors
accept no liability for decisions based on them or for any damage arising
from its use.

USB access needs the adb-support interface, which is not connected
automatically:

 sudo snap connect phonevitals:adb-support

The automatic loudspeaker test listens through the computer's microphone,
which needs:

 sudo snap connect phonevitals:audio-record