Google’s foldable phones, including the Pixel 10 Pro Fold and some Pixel 9 Pro Fold models, are experiencing a strange issue where a question mark icon appears next to the battery icon on the device’s screen. The cause of this bug is unknown, but some users suspect it might be related to hardware issues or a software problem.
Reports started flooding in about 15 days ago, with many users claiming they saw the question mark symbol after the latest security update. Some think it will resolve itself by restarting the phone, while others believe it could indicate more serious problems, such as battery failure or display issues.
The issue only seems to affect Google’s foldable devices and not regular slab phones. Google has yet to publicly acknowledge the problem but has issued device replacements for affected users who complained about the issue. The company is still investigating the cause of this bug.
Source: https://www.androidpolice.com/pixel-fold-battery-question-mark-icon