Panasonic has closed its last remaining TV manufacturing factory in China and is to sell its plant in Mexico as part of a restructuring plan aimed at stemming losses, a newspaper said Saturday.

The Japanese electronics giant was forced to pull the plug on local production in the two countries due to a sharp decline in TV prices in North America and China, the Nikkei newspaper said.

Google profit jumped in the recently ended quarter, but the leap fell short of market expectations as smartphone-centric lifestyles brought with them a shift to cheaper mobile ads.

Google shares whipsawed, losing ground and then gaining, as Wall Street came to grips with concerns about a shift to lower-cost ads on mobile devices and the technology titan's penchant for spending on "moonshots" like self-driving cars and Internet-linked Glass eyewear.

Philipp Mattheis knew his gaming app was addictive when he realized he kept checking his phone -- hooked by the brightly-colored reminders telling him to play again or risk falling from the triple-figure level he had reached.

Yet gripping the German journalist's attention was not Candy Crush, but one of a new generation of Chinese language apps that are using tricks traditionally employed by online games to get users hooked on learning.

Swedish music streamer Spotify will provide the soundtrack for Sony devices, the companies said Wednesday, spelling the end to the streaming music service from the Japanese tech giant that invented the Walkman.

The deal -- which makes the Swedish startup the exclusive provider for Playstation Music and Sony's smartphones and tablets -- sees the companies link up in 41 markets.

It's do-or-die time for Yahoo and Marissa Mayer.

After cutting the cord with China's Alibaba, the high-profile Yahoo chief executive faces more pressure than ever to reinvent the fading Internet star.

U.S. online giant Amazon announced plans Wednesday to offer a cloud-based email and calendar service to directly compete with Microsoft Outlook and others.

The service dubbed Amazon WorkMail "enables users to send and receive email, manage contacts, share calendars, and book resources using the same email applications they use today" including Outlook and services like Google Apps.

Samsung Electronics posted its first drop in annual net profit in three years Thursday and saw resurgent arch-rival Apple barge in on its pole position as the world's top smartphone maker.

The South Korean firm, whose key mobile phone operations have struggled in the face of intense competition from cut-price Chinese rivals, also warned that it expected 2015's "business environment... to be as challenging as 2014."

The fight against Islamic State jihadists is taking place online as well on the battlefield, with 18,000 Twitter accounts linked to the group suspended in recent months, according to a U.S. expert.

IS supporters "are under significant pressure, with the most active and viral users taking the brunt of the suspensions" J. M. Berger, a fellow at the Brookings Institution who tracks militants on social media, told lawmakers on Tuesday.

Twitter on Tuesday began rolling out new group chat and video features as it worked to ramp up use of the one-to-many messaging service.

"Private conversations on Twitter are a great complement to the largely public experience on the platform," product director Jinen Kamdar, whose handle is @jinen, said in an online post.

A U.S. government consumer watchdog agency called Tuesday for better privacy and security to be built into the myriad of connected devices, for fitness, smart homes or other uses. 

The "Internet of Things" guidelines released by the U.S. Federal Trade Commission stop short of a new regulatory effort but nonetheless provoked critics who said the agency is overstepping its authority.