AT&T Customer Reports of iPhone MMS Activation Surfacing

A number of AT&T iPhone users around the United States are reporting that MMS is already working in advance of the September 25 date AT&T has officially announced as the MMS go-live date. According to accounts from forum members and across the web, MMS has started to work for some AT&T iPhone users with iPhone OS 3.1 out of the blue, requiring no action on their part to get it working.

Other forum members have followed instructions provided by Krillr.com to manually update a carrier settings file on their iPhones via iTunes, a method similar to hacks reported earlier this summer. Some have had success while others have not, though the ability to get MMS working appears to be more likely in some locations than others. Members have reported working MMS after applying the carrier file in California, Washington, Florida, Texas, and more, while others in Colorado, New Jersey, and other states describe that this method has not worked for them.

One side effect experienced by some who have tried this method is that visual voicemail ceases to function. Others report that MMS messaging will only work after the iPhone's Wi-Fi radio is turned off.

Another potential factor in enabling MMS functionality before the official go-live date is the selected messaging plan. Those on an unlimited family messaging plan appear to have better chances at success in enabling MMS than those on a standard iPhone messaging plan.

While the methods that require the use of a modified carrier file to enable MMS do not technically appear to be jailbreaking or hacking your iPhone, following these instructions may have some negative consequences that are yet unknown, so iPhone users should proceed with caution in following them. With AT&T's official roll-out of this feature in under two weeks, it may be less risky to wait.

Related Forum: iPhone

Popular Stories

streaming black friday 2025

Black Friday Streaming Deals Include Big Savings on Disney+, Hulu, Apple TV, and More

Monday November 24, 2025 8:03 am PST by
We've been focusing on deals on physical products over the past few weeks, but Black Friday is also a great time of year to purchase a streaming membership. Some of the biggest services have great discounts for new and select returning members this week, including Disney+, Hulu, Paramount+, Peacock, and more. Note: MacRumors is an affiliate partner with some of these vendors. When you click a...
Apple Foldable Thumb

Foldable iPhone to Debut These Three Breakthrough Features

Tuesday November 25, 2025 7:09 am PST by
Apple's first foldable iPhone is expected to launch alongside the iPhone 18 Pro models in fall 2026, and it's shaping up to include three standout features that could set it apart from the competition. The book-style foldable will reportedly feature an industry-first 24-megapixel under-display camera built into the inner display, according to a recent JP Morgan equity research report. That...
General Black Friday Deals 25 Red

Apple Black Friday Deals Available Now on AirPods, iPads, Accessories, and More

Friday November 21, 2025 8:48 am PST by
We're only a few days away from Black Friday, which will take place on Friday, November 28 in 2025. As always, this will be the best time of the year to shop for great deals, including popular Apple products like AirPods, iPad, Apple Watch, and more. In this article, the majority of the discounts will be found on Amazon. Note: MacRumors is an affiliate partner with some of these vendors. When...
General Apps Messages Redux

Singapore Orders Changes to iMessage by December

Tuesday November 25, 2025 6:39 am PST by
Singapore has ordered Apple to block or filter messages on iMessage that impersonate government agencies, requiring the company to implement new anti-spoofing protections by December as part of efforts to curb rising online scams, the Straits Times reports. Singapore's Ministry of Home Affairs (MHA) said that it had issued an Implementation Directive to Apple under the Online Criminal Harms...
iOS 26

iOS 26.2 Adds These New Features to Your iPhone

Thursday November 20, 2025 10:50 am PST by
iOS 26.2 is currently in beta testing. The upcoming update includes a handful of new features and changes on the iPhone, including a new Liquid Glass slider for the Lock Screen's clock, offline lyrics for Apple Music, and more. In a recent press release, Apple confirmed that iOS 26.2 will be released to all users in December, but it did not provide a specific release date. Keep reading...
maxresdefault

The MacRumors Show: iPhone 18 Pro Looks Like a Huge Upgrade

Friday November 21, 2025 9:10 am PST by
On this week's episode of The MacRumors Show, we talk through all of the new features and improvements expected to come to next year's iPhone 18 Pro and iPhone 18 Pro Max models. Subscribe to The MacRumors Show YouTube channel for more videos Apple's next-generation iPhones are less than ten months away and we already have a good idea about what to expect based on corroborated leaks, rumors,...
iOS 26 on Three iPhones

iOS 27 Will Reportedly Have Two Key Upgrades

Sunday November 23, 2025 8:48 am PST by
iOS 27 will reportedly have two major elements: quality improvements and new AI features. In his Power On newsletter today, Bloomberg's Mark Gurman said that iOS 27 will be similar to Mac OS X Snow Leopard, in the sense that Apple is focused on improving "quality and underlying performance" over adding new features. Gurman said there is one exception to this rule, though, as he expects...
apple news banner

Apple News Loses CNN

Monday November 24, 2025 7:56 am PST by
American multinational news company CNN has abruptly pulled its content from Apple News, Semafor reports. CNN quietly removed its stories from Apple News over the weekend and there is no longer a feed from the network to subscribe to in the app. This effectively ends its distribution agreement with Apple while the two sides negotiate new terms. Discussions are apparently ongoing and CNN's...
Apple Foldable Thumb

Crease-Free iPhone Fold on Track for 2026 Launch as Development Advances

Monday November 24, 2025 10:25 am PST by
Apple is making progress on the development of the book-style foldable iPhone expected in 2026, according to a report from Chinese site UDN. The device has reportedly entered the engineering validation stage, and Apple is gearing up for mass production. Citing supply chain sources, UDN says that Apple has solved "the crease problem" that has plagued most foldable smartphones, and the...