User level: Level 1 (4 points)iPhone pro max 12 showing triangle with exclamation mark next to battery icon
Posted on Nov 5, 2026 1:11 PM
User level: Level 10 (199,348 points)Nov 5, 2026 1:19 PM in response to Textbookdave
Are you able to check the battery settings?
Settings > Battery
Battery Health & Charging
What is the Maximum Capacity?
Any other messages about the battery condition there?
Since the iPhone 12 Pro Max is at least 5 years old and probably older, if you have not yet replaced the battery, it is likely way overdue.
You can find a list of Authorized Apple Service Providers in your area that can test and replace the battery by tapping on this link:
User level: Level 10 (105,996 points)Nov 5, 2026 1:26 PM in response to Textbookdave
Please post a screenshot of what you are seeing. If you see it where the cellular bars are, which is next to the battery, that may indicate a hardware issue preventing a cellular connection. Do you have a cellular connection?
User level: Level 10 (233,174 points)Nov 5, 2026 4:01 PM in response to Textbookdave
I found this article from 2024, but it might be of interest to you --> https://www.simplymac.com/ios/triangle-with-exclamation-point-warning-on-iphone-troubleshooting
Originally posted at discussions.apple.com/thread/256389414