Microsoft on Thursday launched an Outlook app for rival handsets running on Apple's iOS and Google's Android, ramping up its software services efforts.
Google's announcement that it will not provide security updates for older versions of its Android mobile operating system means that more than a billion users face growing security risks to their phones or tablets.
Google-backed Android software that leads the smartphone market is spreading to a new generation of smart televisions.
Twitter was back online Monday following a partial outage which the company said was due to a bug.
Researchers working on artificial intelligence at Queen Mary University of London have taught a computer to create magic tricks.
Microsoft is releasing new, beefed-up versions of its popular Office software apps for iPhones and iPads, part of the company's push to stay relevant to workers in an increasingly mobile world.