BlackBerry

BlackBerry reported that in its fiscal fourth quarter, which ran until March 2, it sold 1 million units of its new flagship Z10 smartphone, the first to run its BlackBerry 10 platform. However, in a troubling sign for the company, it also said that its subscriber base fell to 76 million, down from 79 million at the end of the previous quarter and 80 million the quarter before that.

AT&T Mobility, Sprint Nextel, Verizon Wireless and T-Mobile USA parent Deutsche Telekom were among the top five mobile operators worldwide in terms of patent filings, according to a report from industry analyst Chetan Sharma.

Roughly 20 percent of the 100,000 applications available for the fledgling BlackBerry 10 mobile operating system are ports of apps originally developed for Google's rival Android, BlackBerry Vice President for Global Alliances and Business Development Martyn Mallick told All Things D .

The BlackBerry World digital storefront continues building out its television programming catalog, announcing new content licensing agreements with Viacom, Univision Communications and PBS.

Uber Technologies is expanding its on-demand car service to the BlackBerry and Windows Phone mobile operating systems, concurrently updating its application for Google's Android.

BlackBerry announced with much fanfare earlier this month that an unnamed, "established" partner placed an order for 1 million BlackBerry 10 smartphones, the company's largest single order ever. Though the company has declined to name the purchaser, it is wireless device distributor Brightstar, according to an  AllThingsD  report.