Hello,
I have been really struggling with the dramatic decline in battery performance on my relatively new iPhone 17 (purchased directly from Apple in August 2027) running iOS 27.2. In short, I am losing approximately 5-8% of battery life per hour while the phone is sitting idle in standby mode. The phone also runs noticeably warm throughout the day, and I now find myself needing to charge it midday. I've included pictures below for reference.
I have tried numerous suggestions that have been shared in these forums, including:
- Turning off Wi-Fi Assist
- Turning off Background App Refresh
- Turning off the Always-On Display
- Turning off Adaptive Power
- Turning off Siri AI and reverting to the old Siri
- Turning off Bluetooth overnight
- Resetting network settings
- Resetting privacy and location settings
- Unpairing and re-pairing my AirTag
- Setting up the phone as a new device with iOS 27.0.1 (without restoring from an iCloud backup)
None of the above have really made a dramatic impact. I completed the setup as a new device more than three weeks ago, so I would think any initial indexing or background processes would have been completed by now. I also updated to iOS 27.2 last Monday, but unfortunately, I have not noticed any meaningful improvement.
I have contacted Apple Support through chat multiple times. Each time, they have run battery tests and diagnostics and confirmed that they cannot find anything wrong with the battery. Battery health is currently at 100%. I also spoke with an Apple Support representative by phone who mentioned that they had received quite a few calls about similar issues and suspected it could be software related. She suggested bringing the phone to an Apple Store, where they could provide a loaner device while evaluating mine. However, the nearest Apple Store is at least an hour away.
Prior to iOS 27, I had excellent battery life, and my phone rarely got warm. Now, even with the case removed, the back of the phone becomes noticeably warm to the touch at random points throughout the day. Interestingly, I do not experience this same warmth while the phone is charging.
For comparison:
- My wife has an iPhone 17 running iOS 27.0.1 and has excellent battery life.
- My daughter has an iPhone 17e running iOS 27.2 and also has good battery life.
At this point, I'm honestly at a loss. I've tried just about every troubleshooting suggestion I can find, and nothing seems to make a difference. I still lose battery life.
Is anyone else experiencing similar battery drain and overheating issues with the iPhone 17 and iOS 27.2? I'd also welcome any other suggestions that I may have overlooked.
Thanks in advance!
[Edited by Moderator]
