iPhone 4S

Intel CEO Paul Otellini has stepped down from his post, but not before divulging some interesting revelations in the process. As it turns out, Otellini and Intel turned down the chance to work on the original iPhone, now with some element of regret. As Otellini told The Atlantic:

The US Department of Defense, which has been preparing to allow its employees to use iPhones and certain Android devices for some time, is expected to grant security approval for devices from Apple and Samsung in the coming weeks. There will be separate security approvals for iOS and Samsung Galaxy device. DoD employees will be allowed to use iPhones and iPads for non-classified communications like email. According to the Wall Street Journal:

Smartphones outshipped feature phones for the first time in Q1 2013, with the iPhone reaching a new first-quarter personal high for shipments. Apple had the second-highest number of smartphones shipped, coming in behind Samsung.

The Home button is the most used and arguably the most important button on the iPhone. For everyone new to smartphones and to mobile computing, it's an escape hatch that they can press at any time, any where, and immediately be returned to a safe, familiar place. For more experienced users, it's a way to activate everything from Spotlight to Siri, the fast app switcher to the accessibility menu. Because the Home button serves so many purposes, for so many people, the mechanical switch itself is subject to an incredibly high level of use, and potential for wear and tear. That's why, more than any other physical button, the Home button has been a source of problems over the years, for Apple and consumers.

More than 6 years after the original iPhone was introduced, and almost 6 months after the iPhone 5 was launched, T-Mobile US finally has an Apple phone on their shelves. Along with bright Magenta Apple t-shirts, and some unusual new data plans, T-Mobile is banking on the iPhone 5 being as popular on their network as it's been on every other US network to date. We already have a full review of the iPhone 5 and a detailed walkthrough of iOS 6, so here I'm going to cover everything that makes the T-Mobile iPhone 5 different and, hopefully, special.

Picking up a new T-Mobile iPhone 5? Whether it's your first iPhone, or just your first iPhone in a while, whether you're trying to set up your device for the first time, or figure out Apple features like iCloud, Siri, iMessage, Notification Center, or FaceTime, or simply get a handle on the basics like mail, calendar, or photography, we're got you covered.

If you already know everything there is to know about the iPhone, save this link for family, friends, co-workers, classmates, or anyone else who might need some help. We'll do the heavy lifting so you don't have to. If you want to learn more, dive in now!

iPhone users guide

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Today, T-Mobile becomes the fourth and final major US carrier to launch Apple's iPhone 5. If you're thinking of heading down to your local store to pick one up, but you're not sure which exact model is best for you, we're here to help. There are a lot of decisions involved when it comes to buying a new iPhone, or any phone for that matter. Is the iPhone really the best phone for you? Is the iPhone 5 really the best iPhone? Is T-Mobile really the best carrier? Even after you've decided it is and they are, there's still the question of which color and what capacity to get.

Enter iMore's comprehensive iPhone buyers guide. If you need help deciding what to buy, we've got your back. And if you've already decided, just bookmark, email, Facebook, or Tweet this so we can help your friends and family and you can get on with enjoying your new iPhone!

• Read the complete iPhone buyers guide now

T-Mobile iPhone 5 pre-orders have gone live, and the last of major US carriers to not have the iPhone now has it as last. Thanks to T-Mobile's new "uncarrier" plans, you can get a 16GB iPhone 5 for $99, 32GB from $199, or 64 GB for $299, or you can buy them outright for $579.99, $679.99, $779.99. Black or white.

Apple was the top smartphone vender in the United States between December and February according to the latest comScore report. Apple captured 38.9% of a smartphone market of 133.7 million people, up 3.9% from the last measurement period.