iOS 18 holdouts: 18.7.7 is out now for devices that were eligible for the 26 upgrade. You should upgrade immediately. The security updates are significant. https://www.macrumors.com/2026/04/01/apple-ios-18-darksword-security-update/
Apple Issues Rare iOS 18 Security Update to Protect Against DarkSword Exploit

Apple today released a new build of iOS 18.7.7 and iPadOS 18.7.7, presumably with a fix for the DarkSword exploit. Apple told Wired that it would...

MacRumors
@misty UGH i gave in 3 days ago after the malware started showing up in ad networks
@cancel Honestly I think it’s on Apple they waited this long. :/
@misty absolutely, but i feel stupid holding out for almost 6 months and then giving in 3 days too soon
@cancel Yeah… that’s fair. :/ I was in the verge of giving in too
@misty it's absolutely a downgrade, even 26.4. on an iphone 16 pro max the battery drains noticeably faster doing nothing at all. (this is accounting for the initial flurry of useless background activity it does after a major upgrade.)
@cancel @misty Likewise, I replaced the battery in my iPhone 11 recently and “upgrading” to iOS 26 basically undid the gain.