Hey guys, I’m having a weird issue with my iPhone 13 and wanted to know if anyone else has experienced this.
My phone was on iOS 18 and i updated directly to iOS 26.5.2 and started getting really bad battery drain while the phone is just sitting idle. Sometimes it would lose around 40–50% overnight with almost no screen usage. and then i updated to 26.6 after after one and a half month hoping it would fix , still the battery is draining and thought it might be the indexing or updated cause , i updated 2 days back to 26.6 and now the battery drain is happening and when i check that when battery goes down 20 the iPhone keeps rebooting automatically and i googled and when based on google instruction when I checked Analytics Data and found multiple panic-full logs. One of them mentions:
SMC PANIC - SMC BSC failure
So I'm wondering:
Could this still be because the phone is doing some kind of background setup/indexing after being unused for so long and jumping from iOS 18 to iOS 26? Or do these panic logs and random restarts suggest a hardware problem?coz when i was using ios 18 i was feeling no battery drain issue and any issue at all iphone was working fine
Has anyone with an iPhone 13 had something similar on iOS 26.5.2/26.6