Thermal monitoring

thermalmonitord: interpret the missing input, not just the process name

A panic naming thermalmonitord means the monitoring service did not receive an expected input or response. It does not establish one universal failed component across iPhone models.

Extract the evidence together

Full panicString and watchdog context.
Every missing-sensor token, not only the first match.
Exact device identifier, iOS version and recent repair history.

Trace the dependency

Map each token to the correct model revision, then look for a shared connector, supply or bus. Multiple missing channels can be secondary to one common path.

Non-destructive confirmation

Inspect for contamination, bent pins and incomplete seating.
Confirm part revision and test a known-good compatible assembly.
Measure the mapped supply or communication line before board work.

Other causes

An incompatible flex, connector damage, an open trace, a missing rail or a board-side communication fault can all leave thermalmonitord without valid data.

Model limitation

The service name identifies the monitoring failure. Only exact-model mapping and bench tests can identify the physical component.