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iPhone panic error lookup

What the common lines in a Panic-Full log mean, and which part to check before you open the phone.

An iPhone that restarts on its own usually leaves a Panic-Full log under Analytics Data. Each error line in that log points to a group of parts: a sensor that stopped reporting (Missing sensor), a system process that hung (watchdog timeout), an SMC value, or a coprocessor such as AOP, ANS or DCP. This lookup summarizes the meaning, severity and common causes of each error so technicians can narrow things down fast. To see exactly what is wrong with a given phone, scan or paste its log into the Panic Scan app.

Panic errors by log line

Signature strings in the panicString, grouped by part category.

Missing sensor

A sensor that stops reporting makes thermalmonitord restart the phone after about 3 minutes.

Watchdog timeout

A system process failed to respond in time, so the watchdog restarted the phone.

SMC panic values

SMC PANIC - ASSERTION FAILED values by iPhone model.

Open the SMC table

Find the faulty part on the first try

Free to download, analyzes on the device, no computer needed.

Coming soon to the App Store