Crashing UI, drained battery life, and random restarts: iPhone users report bugs after updating to iOS 27
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iOS 27 software update overview. Image by Bangla press | Shutterstock
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- iPhone users report iOS 27 causing crashing interfaces, slow animations, and unresponsive screens.
- Battery drain and overheating complaints have appeared on models including iPhone Air and iPhone 15 Pro Max.
- Some iPhone 18 users say devices randomly restart during Face ID, Apple Pay, or phone calls.
Key Takeaways by nexos.ai, reviewed by Cybernews staff.
Along with new devices, Apple also released its latest software system, iOS 27, earlier this month. However, some users are unhappy with the upgrade, as it seems riddled with bugs.
A number of users took to social media channels such as Reddit and X to share their impressions after updating their devices to the latest version of Apple's smartphone software.
But instead of enjoying the latest iOS 27 features, multiple users reported that their devices became buggy after downloading the update.
Unresponsive screen with iOS 27
Some users noted that after downloading the latest version of Apple software for smartphones, their devices became slower or even unresponsive.
It seems that the bug affected not only the iPhone 18 lineup, but also older models.
“Editing home screen widgets crashes the whole UI, only a restart fixes it,” noted a Redditor who's been using an iPhone 13 Pro.
Another iPhone 17 Pro Max user noted that they “still see some jankiness during animations and the fps slow down on Reddit, WhatsApp, Wallet. Mostly when swiping or switching screens.”
“Well, bugOS 27 is unreal,” wrote one X user, adding a video showing how buggy the interface gets after trying to make changes to their widgets.
Drained battery
A number of users also reported changes to their battery life after getting iOS 27.
“I’m using an iPhone 15 Pro Max (battery health 84%, around 828 cycles). After updating to iOS 27, I’m noticing higher battery drain than before,” wrote one Redditor.
While the user thought the issue might be related to battery health, a number of iPhone owners also noticed their battery life changed after the update.
“Also seeing higher battery drain overnight (iPhone Air) despite having airplane and low power mode active,” added another user, with one netizen noticing that due to the update, their iPhone Air started overheating.
Random restarts
Last week, iPhone 18 users reported that their new smartphones would randomly restart, especially when using Face ID, Apple Pay, or making phone calls.
Despite some owners reporting that the company agreed to replace their devices, users couldn’t agree on whether the issue was caused by hardware or software. Apple also hasn’t commented on the problem.
While some users are reporting their issues via Apple Community, others are trying to figure out how to resolve them themselves.
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For example, some iPhone owners learned that minimizing the number of apps on their home screen helps solve the slow or unresponsive screen problem, according to TechRadar.
Nevertheless, it’s expected that the company will fix these issues with the next software update.
The conversation on this topic is live. Join in the discussion.
Here comes iOS 27.1
Apple was expected to release iOS 27.1 alongside the iPhone Duo on October 23rd.
Nevertheless, the company has already released the updated OS version, iOS 27.1, which includes bug fixes and addresses previously reported issues.
One such issue involved restarts on the iPhone 18 Pro and iPhone 18 Pro Max when using Face ID.
The company also added a fix to a problem related to the smartphone’s new camera.
“A color artifact may appear on photos captured at 2x under certain lighting conditions at f/1.48 on a small number of iPhone 18 Pro and iPhone 18 Pro Max devices,” shared the company on Apple's support page.
The new software update also resolved the issue of the touchscreen becoming unresponsive when opening Notification Center and Control Center simultaneously.
