Ina Fried

Another big security flaw in Android highlights just how messed up the Google ecosystem still is when it comes to security. This one, known as Quadrooter, was disclosed in recent days by security software maker Check Point. Quadrooter affects a whole host of top-end Android devices running one of Qualcomm’s Snapdragon chips. That means hundreds of millions or even a billion devices could be at risk, including top-end models such as the Samsung Galaxy S7, HTC 10 and LG G5 and even Google’s latest Nexus devices and security-focused devices like BlackBerry’s Priv and Silent Circle’s Blackphone.

The problem is there are still so many hands in the pot when it comes to updating Android. Google updates its software, but device makers have to tailor it for their phones — and sometimes they get their software not from Google, but from chipmakers like Qualcomm. And then sometimes mobile carriers want to do their own testing to make sure they aren’t inadvertently introducing other problems onto their network. All that means the time from when a flaw is identified or disclosed to when it is fixed is longer than it should be, sometimes leaving hundreds of millions of phones vulnerable for weeks or months.

Verizon is announcing that it is nearly ready to offer nationwide calling over its LTE network, but the reality is this is just the start of a long process.

Eventually, the addition of voice-over-LTE will allow for higher-quality calls, quicker connection and easy video chats. But because those features require both parties to be on Verizon, have a compatible phone and opt-in to LTE calling, very few such calls will be made initially.

At some unspecified point, VoLTE calling will become the default. Even further down the road -- probably not until at least 2016 -- Verizon will start selling phones that only support LTE. And while the initial service is limited to calling fellow Verizon members, lab work is under way to eventually let people call among different LTE networks.

T-Mobile clarified that it has no plans to broadly throttle its unlimited data customers, but is reaching out to a small number of customers using the service in violation of company policies.

In particular, T-Mobile is calling people using the service to run a full-time Web camera or a server, or using their phones for large-scale peer-to-peer file sharing, to let them know that such practices aren’t allowed. That memo, T-Mobile’s Chief Marketing Officer Mike Sievert said, was misinterpreted by some to mean some sort of broad throttling of heavy users.

He stressed that for customers paying for totally unlimited service on their phone, T-Mobile means unlimited.

With T-Mobile adding customers and suddenly becoming the target of a surprise buyout offer, it’s easy to think the company might not need Sprint after all. But the truth is that few options other than a sale to rival Sprint will help T-Mobile thrive over the long term.

Because AT&T and Verizon are so much bigger than T-Mobile, only a partner or owner with deep pockets could help it topple its powerful rivals.

Apple’s $3 billion purchase of Beats Music and Beats Electronics has been completed. Apple has notified roughly 200 Beats workers that their positions at Apple will only be temporary, while the remainder will join Apple permanently.

AT&T grabbed a lot of attention back in January when it announced plans to offer companies the option to pay for data used by their customers. Since then? Crickets.

Speculation that Amazon might be the first big-name customer for the service for the Fire phone proved to be premature. However, AT&T has been gradually adding a few smaller names to the pilot program launched earlier in 2014. So-called sponsored data is designed to work like a toll-free number did in the landline days.

In this case, the sponsor foots the bill for the consumer to use certain services without having the resulting data use count against his or her monthly limit. Seattle-area startup Syntonic Wireless is announcing that it is now a part of the AT&T effort and plans to launch a sponsored content marketplace that will allow smartphone owners to see a range of available content that won’t count against their monthly data cap.

AT&T said that it is selling its stake in America Móvil, the large Latin American cell phone company and parent of US prepaid brand Tracfone.

Mexican billionaire Carlos Slim, the primary owner of America Móvil, will pay nearly $5.6 billion for AT&T’s stake, according to a regulatory filing.

“When we announced the DirecTV deal, we said that we would sell our stake in (America Movil) to facilitate the regulatory approval process in Latin America,” AT&T said.

AT&T has been pretty quiet about its plans for “toll-free” data service since announcing its plans at CES in January. With sponsored data, companies foot the bill for certain kinds of data use, meaning it is free for consumers.

AT&T said at the time that it was testing the service with a handful of partners, but has gone radio silent since then. That could change if, as some suspect, Amazon chooses to subsidize some of their customers’ data usage on the smartphone it is introducing.

Amazon could offer its sponsored data as part of its Amazon Prime service, which recently got a $20-per-year price hike in order to cover some of the rising costs with the service. Amazon added a Prime music service that offers subscribers unlimited streaming (though the service lacks most recent releases and has a smaller catalog than other music services).

In the last nine months, some 28 million US customers opted to pay one of the major carriers full price for a smartphone rather than sign up for a two-year contract to get a discounted model, according to a new study.

Of those customers, an estimated eight million switched carriers to get one of the new-style plans, with the lion’s share of the switchers (5.1 million) of those going to T-Mobile, according to research being released later by Consumer Intelligence Research Partners.

Typically, such purchase options come with lower-cost monthly service, the option to upgrade sooner or both. T-Mobile has shifted entirely to such plans, while AT&T offers no-subsidy options with its Next and Mobile Share Value programs and Verizon has its Edge program. Even where customers have a choice to get a subsidized phone, the financing programs appear to be gaining steam.

[Commentary] Once again, T-Mobile is boasting about how its wireless growth outpaced the rest of the industry combined.

And rarely does a week go by without CEO John Legere touting all of the many ways that his un-carrier is shaking things up. But the question now is whether those market share gains -- and all that bluster -- will actually make it harder for T-Mobile and Sprint to complete a merger that many say the companies need to become a long-term competitor to Verizon and AT&T.

“The answer is 100 percent yes,” said wireless industry analyst Chetan Sharma. “It would have been easier to push through a deal if T-Mobile was weaker than it is today. In an ironic twist of fate, the recent success of T-Mobile has worked against them.”