at&t iPhone 4S Has Fastest Speeds

A study measuring the performance of the iPhone 4S on the three major U.S. wireless carriers found AT&T to be the best in Web browsing and data downloads and uploads when compared to Apple’s latest smartphone on either the Verizon Wireless or Sprint networks.

iPhone newcomer Sprint was found to be superior with its iPhone 4S for network voice quality on the uplink (when the user is speaking), but Sprint was also about five times slower in Web browsing and data downloads than AT&T, according to the study released Friday by Metrico Wireless, a mobile performance measurement company. Verizon finished in the middle on those data tests, but trailed the other two carriers in voice quality.

Metrico measured five performance factors shortly after the iPhone 4S was launched on all three carriers in October: whether calls could be connected and held; voice quality; data performance; Web browsing by page load speeds and video performance.

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Comcast Starts IPv6 Network Rollout

Comcast has begun the production rollout of its new IPv6 service, with 100 customers upgraded in San Francisco’s East Bay in one week.

IPv6 is an upgrade to the Internet’s main communications protocol, which is called IPv4. IPv6 features an expanded addressing scheme that can support billions of devices connected directly to the Internet at faster speeds and lower cost than IPv4, which is running out of addresses.

Comcast began an IPv6 trial 18 months ago and is a leader in the deployment of IPv6-based services among U.S. ISPs.

The production rollout began on Oct. 31. It offers customers “native dual-stack service,” which means Comcast is supporting both IPv6 and IPv4 services.

The initial subscribers of Comcast’s production-quality IPv6 service have stand-alone computers running Microsoft Windows 7, Windows Vista or Apple Mac OS X that are connected directly to a Comcast cable modem. Comcast plans to support IPv6 for customers with home routers at a later date.

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Jobs Returns To Announce Apple’s New Product

Apple Inc CEO Steve Jobs returns on Monday to the stage at San Francisco’s Moscone center to unveil what investors hope will be the next source of growth for the world’s most valuable technology company.

Jobs, who has been on medical leave for several months and last took the stage in March to present the iPad 2, will announce the iCloud, a Web-based service that lets consumers stream music they bought to any Apple device, pitting it against rivals Google Inc and Amazon.com Inc.

That expansion into cloud computing is seen as necessary if the company is to stay competitive with increasingly popular open-sourced software, such as Google’s Android operating system, according to analysts and investors.

The iCloud has the potential to make Apple’s iTunes even more powerful, making it tougher for rivals to keep up, Sterne Agee analyst Shaw Wu said.

“It looks like Apple will likely offer some base service for free,” Wu said. “Competitors, including RIM, Google, Amazon and Microsoft already have a hard time competing with iTunes as it is, but we believe will likely find it even tougher with iCloud enhancements.”

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AT&T’s iPhone 4 Beats Verizon’s

In the phone wars between the two big carriers, it looks like AT&T wins this round. The iPhone 4 on AT&T’s network downloaded data twice as fast, on average, as the iPhone on Verizon Wireless, according to thousands of recent field tests in five U.S. cities performed by Metrico Wireless, an independent mobile device performance evaluation firm.

Metrico’s tests looked at several other variables, however, and found the average Web page load time was nearly the same on iPhone 4 on both networks, a Metrico official said.

Also, when the iPhone 4 was in a moving vehicle, the AT&T model successfully finished about 10% more download session than Verizon’s. But when the iPhones were stationary, the Verizon iPhone had a 10% better success rate in uploading data than the AT&T iPhone, Metrico said.

Metrico did not reveal actual time measurements for any of its results, including the data downloads and uploads or Web page loading times, prior to publication of its full study.

Some of Metrico’s findings are at odds with several smaller spot reports conducted last month that found Verizon’s iPhone performed better on several criteria. But a Metrico official noted that those quick studies were based on only a handful of test samples, often in a single city, including San Francisco, where AT&T’s coverage for the iPhone has been consistently criticized.

AT&T admitted more than a year ago that it had network problems in downtown San Francisco and Manhattan and had begun infrastructure updates.  Read More….

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