Canada accused China on Tuesday of hacking into the computers of its research and development arm, which Beijing strongly denied.

China partners each year with thousands of Canadians firms to roll out new technologies, and took advantage of this arrangement to engage in a cyber attack, Ottawa said.

Rhapsody International Inc. said Tuesday its partnership with T-Mobile U.S. Inc. has helped boost its number of paying subscribers to more than 2 million, up from 1.7 million in April.

Last month, Rhapsody teamed up with the nation's fourth-largest carrier on a new service called unRadio. It allows users to stream randomly generated songs along a genre, artist or song name without ads. It also lets them save 25 favorite songs to their device and lets them skip an unlimited number of tracks.

German voice and data encryption specialist Secusmart, which helps equip the German government with secure smartphones, says it's being acquired by BlackBerry for an undisclosed sum.

Secusmart said Tuesday that the deal with Canada's BlackBerry Ltd. "will open the global market in secure mobile communications" for the company. The transaction requires regulatory clearance.

China is investigating Microsoft for allegedly operating a monopoly in its market, the government said Tuesday, as it took aim at the U.S. software giant over business practices.

The move makes the company the latest foreign firm to face Beijing's scrutiny, in fields from computing to baby milk.

Amazon announced Monday the launch of an online store for 3D printed items to allow consumers to customize and personalize items like earrings, pendants, dolls and other objects.

The store offers more than 200 items including nylon wallets, wax seals, cookie cutters and bobbleheads.

The European Commission said Monday it has cleared Apple's $3 billion (2.2 billion euros) acquisition of U.S. headphone maker and music streaming business Beats.

Brussels had been concerned the takeover of Beats Electronics, founded by rapper Dr Dre and music industry giant Jimmy Iovine, by the technology giant could hurt competition as both make headphones.

Online real estate website Zillow announced Monday it was buying rival Trulia in a $3.5 billion stock deal that merges the two main firms in the sector.

"Consumers love using Zillow and Trulia to find vital information about homes and connect with the best local real estate professionals," Zillow chief executive Spencer Rascoff said.

Microsoft said Monday it was under investigation by antitrust authorities in China, pledging to cooperate in the investigation.

"We aim to build products that deliver the features, security and reliability customers expect, and we will address any concerns the government may have," Microsoft said in an emailed statement.

Samsung Electronics said Monday it would postpone the roll-out of its new smartphone based on Tizen, a home-grown operating system aimed at breaking away from Google's Android system.

The delay is seen as a blow to Samsung's campaign to carve out a niche in mobile software and services, to complement its dominant hardware role.

Your smartphone is not only your best friend, it's also become your personal trainer, coach, medical lab and maybe even your doctor.