0x700000 — 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, all three mandatory sensors of the iPhone 14 / 14 Plus are missing at once. 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
Charging port + wireless 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, all three mandatory sensors of the iPhone 14 / 14 Plus are missing at once. 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 all three flexes (charging port, wireless coil, front sensors); a simultaneous failure of all three points to corrosion or a common logic board fault.
On iPhone 15 Pro Max, iPhone 15 Pro
Charging port + wireless coil (+ proximity sensor according to DFRWS)
SMC “BSC failure” panic: the system management controller (built into the SoC) periodically waits for a response from each mandatory sensor; DFRWS gets this value by disconnecting all three modules (USB, coil, proximity); Repair Wiki describes it as charging port + wireless coil. 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 charging port, wireless coil and front sensors flexes.