0x800 — SMC: silent sensor
SMC “BSC failure” panic: the system management controller (built into the SoC) periodically waits for a response from each mandatory sensor; here, the sensor carried by the charging port flex has stopped responding. With no response, it forces a restart, which repeats roughly every 3 minutes (≈180 s) as long as the sensor stays silent. Reproduced experimentally on iPhone 13 Pro by disconnecting the flex (DFRWS 2025).
On iPhone 13 Pro Max, iPhone 13 Pro, iPhone 13 mini, iPhone 13
Charging port flex (Lightning)
First check
Check the seating and condition of the charging port flex (tears, corrosion, FPC connector pins), then test with a known-good genuine flex; if the panic persists, measure the connector pins on the logic board in diode mode.
iPhone 13 Pro Max ›iPhone 13 Pro ›iPhone 13 mini ›iPhone 13 ›
Sources
- iFixit – iPhone SMC Panic Assertion Failed (tableau « Sensor Reference ») ↗
- Song, Yang, Lee et al. – A study on the recovery of damaged iPhone hardware exhibiting panic full phenomena, DFRWS APAC 2025 / FSI: Digital Investigation 54 (2025) 301980 – Tableau 5 (débranchement de modules) ↗
- Repair Wiki – How To Fix an iPhone 13 That Randomly Restarts (copie Wayback Machine 2026-02-18) ↗
- iPad Rehab – Troubleshooting iPhone Reboot: How to Fix an iPhone that Restarts Every Three Minutes ↗