Chosen Solution
Getting an issue with my iPhone XS where under normal load it seems to work okay. However when I start streaming from YouTube, turn the flashlight on, brightness up etc to drain the battery down, the phone turns off and reboots to the apple logo. It still re-boot even on charge and with all flex cables disconnected. Just wondering if this is something that someone’s seen before? I have a feeling it might be board level, but not entirely sure. Face ID, Cameras etc are all working fine
This is either a board-level issue, for example following a drop or exposure to water or a battery issue. To eliminate any potential battery issues, use a battery utility, such as coconutBattery (for Mac) or 3uTools (for Windows). Anything less than 75% of design capacity can cause these symptoms and will require replacement. Also check to see if there are any unusual heat spots, for example, near a camera. That would be indicative of a failing modular component. If none of that leads to a solution, then it may be a logic board issue, which will need to be looked at by a micro-soldering expert (don’t trust an X series phone to just anyone!).
