Some brave souls have tried to update their SIM Unlocked iPhones to 1.1.1 and there appear to have been mixed results.

Jonathan Seff at iPhoneCentral gave it a shot and found that his unlocked iPhone now gives an "Incorrect SIM" error. He even went to an AT&T store who gave him a new SIM and still no luck.

Meanwhile, a few anecdotal reports indicate that some people have been able to successfully upgrade their unlocked iPhone to 1.1.1 without any ill consequences.

At this early stage, we'd recommend people with Unlocked iPhones continue to wait to update while more definitive testing has been done.

Related Forum: iPhone

Popular Stories

iOS 26

iOS 26.3 and iOS 26.4 Will Add These New Features to Your iPhone

Tuesday February 3, 2026 7:47 am PST by
We are still waiting for the iOS 26.3 Release Candidate to come out, so the first iOS 26.4 beta is likely still at least a week or two away. Following beta testing, iOS 26.4 will likely be released to the general public in March or April. Below, we have recapped known or rumored iOS 26.3 and iOS 26.4 features so far. iOS 26.3 iPhone to Android Transfer Tool iOS 26.3 makes it easier...
Apple Logo Black

Apple's Next Launch is 'Imminent'

Sunday February 1, 2026 12:31 pm PST by
The calendar has turned to February, and a new report indicates that Apple's next product launch is "imminent," in the form of new MacBook Pro models. "All signs point to an imminent launch of next-generation MacBook Pros that retain the current form factor but deliver faster chips," Bloomberg's Mark Gurman said on Sunday. "I'm told the new models — code-named J714 and J716 — are slated...
iOS 26 Home Feature

Apple Gives Final Warning to Home App Users

Tuesday February 3, 2026 8:55 am PST by
In 2022, Apple introduced a new Apple Home architecture that is "more reliable and efficient," and the deadline to upgrade and avoid issues is fast approaching. In an email this week, Apple gave customers a final reminder to upgrade their Home app by February 10, 2026. Apple says users who do not upgrade may experience issues with accessories and automations, or lose access to their smart...
Aston Martin CarPlay Ultra Screen

Apple's CarPlay Ultra to Expand to These Vehicle Brands Later This Year

Sunday February 1, 2026 10:08 am PST by
Last year, Apple launched CarPlay Ultra, the long-awaited next-generation version of its CarPlay software system for vehicles. Nearly nine months later, CarPlay Ultra is still limited to Aston Martin's latest luxury vehicles, but that should change fairly soon. In May 2025, Apple said many other vehicle brands planned to offer CarPlay Ultra, including Hyundai, Kia, and Genesis. In his Powe...
Apple Foldable Thumb

First Foldable iPhone Design Details Revealed

Monday February 2, 2026 7:19 am PST by
Apple's first foldable iPhone will feature relocated volume buttons, an all-black camera plateau, a smaller Dynamic Island, and more, according to design leaks from a known Weibo leaker. The user known as "Instant Digital" today claimed to share several key details about the design of the foldable iPhone: The volume buttons will be located on the top edge of the device, aligned to the...