0x600000 — 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, two sensors are missing: wireless coil (0x400000) and proximity (0x200000). With no response, it forces a restart, which repeats roughly every 3 minutes (≈180 s) as long as the sensor stays silent.
On iPhone 14 Plus, iPhone 14
Wireless charging coil + proximity sensor
SMC “BSC failure” panic: the system management controller (built into the SoC) periodically waits for a response from each mandatory sensor; here, two sensors are missing: wireless coil (0x400000) and proximity (0x200000). With no response, it forces a restart, which repeats roughly every 3 minutes (≈180 s) as long as the sensor stays silent.
First check
Check/test the wireless coil flex and the front sensors flex, both of which must be connected.
On iPhone 15 Pro Max, iPhone 15 Pro
Wireless charging coil + proximity sensor
SMC “BSC failure” panic: the system management controller (built into the SoC) periodically waits for a response from each mandatory sensor; here, two sensors are missing: proximity (0x200000) and wireless coil (0x400000). With no response, it forces a restart, which repeats roughly every 3 minutes (≈180 s) as long as the sensor stays silent.
First check
Check/test the front sensors flex and the wireless coil flex.
On iPhone 17 Pro Max, iPhone 17 Pro
Charging port flex (USB-C) / barometric pressure 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 in the charging port assembly has stopped responding (decimal value 6291456). With no response, it forces a restart, which repeats roughly every 3 minutes (≈180 s) as long as the sensor stays silent.
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.
Sources
- 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 14 That Randomly Restarts (copie Wayback Machine 2026-03-02) ↗