Apple Seeds iOS 5.1 Beta 3 to Developers, Restores 'Enable 3G' Toggle

Returning from a holiday break, Apple today seeded iOS 5.1 Beta 3 to developers to allow for further testing of the next update to the company's mobile operating system. The new version arrives as Build 9B5141a, up from the previous Build 9B5127a released ad iOS 5.1 Beta 2 on December 12.

ios 5 1 beta 3 ota
Screenshot of iOS 5.1 Beta 3 over-the-air update (Source: @CDeeRON)

So far the update appears to only be available via the over-the-air update mechanism for existing iOS 5.1 beta users, but should become available for general download through Apple's iOS developer program site shortly. We'll have more information on the new build at that time.

Update: We're still waiting for Apple to post iOS 5.1 beta 3 to the developer site with release notes, but commenters in our forums have noted that the new build restores the toggle that allows users to turn off 3G cellular data access. As Apple notes on the setting, 3G offers faster data speeds but uses more battery power than EDGE.

ios 5 1 beta 3 enable 3g
Update 2: iOS 5.1 Beta 3 is now available via the iOS developer program portal. Xcode 4.3 Developer Preview 3 and Apple TV Software Beta 2 have also been released today.

ios 5 1 beta 3
The full release notes for iOS 5.1 Beta 3 still have not been posted.

Update 3: The release notes for iOS 5.1 Beta 3 have now been posted, and one item of note involves a new API to help developers flag app content that should not be backed up.

iOS 5.1 introduces a new API to mark files or directories that should not be backed up. For NSURL objects, add the NSURLIsExcludedFromBackupKey attribute to prevent the corresponding file from being backed up.

The addition appears to be an expansion of the company's iOS 5.0.1 effort to help deal with content being stored for offline use that does not need to be committed to a device backup but which should not be subject to removal during the purging of caches. Apple will be replacing the com.apple.MobileBackup file attribute introduced in iOS 5.0.1 with the new API usage in iOS 5.1.

Popular Stories

maxresdefault

Apple Shows Off a Key Reason to Upgrade to the iPhone 17

Saturday February 7, 2026 9:26 am PST by
Apple today shared an ad that shows how the upgraded Center Stage front camera on the latest iPhones improves the process of taking a group selfie. "Watch how the new front facing camera on iPhone 17 Pro takes group selfies that automatically expand and rotate as more people come into frame," says Apple. While the ad is focused on the iPhone 17 Pro and iPhone 17 Pro Max, the regular iPhone...
apple wallet drivers license feature iPhone 15 pro

Apple Says These 7 U.S. States Plan to Offer iPhone Driver's Licenses

Monday February 9, 2026 6:24 am PST by
In select U.S. states, residents can add their driver's license or state ID to the Apple Wallet app on the iPhone and Apple Watch, and then use it to display proof of identity or age at select airports and businesses, and in select apps. The feature is currently available in 13 U.S. states and Puerto Rico, and it is expected to launch in at least seven more in the future. To set up the...
m5 macbook pro deal

Why You Shouldn't Buy the Next MacBook Pro

Tuesday February 10, 2026 4:27 pm PST by
Apple is planning to launch new MacBook Pro models as soon as early March, but if you can, this is one generation you should skip because there's something much better in the works. We're waiting on 14-inch and 16-inch MacBook Pro models with M5 Pro and M5 Max chips, with few changes other than the processor upgrade. There won't be any tweaks to the design or the display, but later this...
iOS 26

Apple Releases iOS 26.3 and iPadOS 26.3

Wednesday February 11, 2026 10:07 am PST by
Apple today released iOS 26.3 and iPadOS 26.3, the latest updates to the iOS 26 and iPadOS 26 operating systems that came out in September. The new software comes almost two months after Apple released iOS 26.2 and iPadOS 26.2. The new software can be downloaded on eligible iPhones and iPads over-the-air by going to Settings > General > Software Update. According to Apple's release notes, ...
Apple Logo Zoomed

Apple Expected to Launch These 10+ Products Over the Coming Months

Tuesday February 10, 2026 6:33 am PST by
It has been a slow start to 2026 for Apple product launches, with only a new AirTag and a special Apple Watch band released so far. We are still waiting for MacBook Pro models with M5 Pro and M5 Max chips, the iPhone 17e, a lower-cost MacBook with an iPhone chip, long-rumored updates to the Apple TV and HomePod mini, and much more. Apple is expected to release/update the following products...

Top Rated Comments

Mlrollin91 Avatar
184 months ago
Absolutely NOT. Edge is painfully slow. And other than battery life, it isn't like your data usage will be less on Edge. It'll just download slower.

But it can effect battery drastically. If you are in an area with poor 3G, your phone is constantly looking for that signal. If you manually switch to Edge it saves battery because its not looking for 3G.
Score: 28 Votes (Like | Disagree)
184 months ago
guys, we all stand corrected.. in the latest beta, you can turn off 3G! this is great for me!
Score: 17 Votes (Like | Disagree)
184 months ago
Absolutely NOT. Edge is painfully slow. And other than battery life, it isn't like your data usage will be less on Edge. It'll just download slower.

Obviously....but that's not why people turn off 3G. Sometimes 3G can be bogged down or unresponsive. For example when I attend NFL games, it's sometimes impossible to send texts or get data on 3G, but when I switch to EDGE, things go through. Ever since I got my 4S though, this hasn't been possible.
Score: 15 Votes (Like | Disagree)
184 months ago
Anyone else crossing their fingers this enables 4s users to be able to switch 3G off and use EDGE only. I'm not talking about turning cellular data off.
Score: 15 Votes (Like | Disagree)
Peace Avatar
184 months ago


Anyone else crossing their fingers this enables 4s users to be able to switch 3G off and use EDGE only. I'm not talking about turning cellular data off.

Like this ?
Score: 11 Votes (Like | Disagree)
184 months ago
Really or fake/troll post?

is something wrong with you? why dont you read my previous posts, or at least download and install the beta 3 before you comment.
Score: 10 Votes (Like | Disagree)