Twitter recently announced that it has entered an agreement to acquire ZipDial, a mobile service company based in Bangalore, India. ZipDial allows users to place phone calls to receive content, such as notifications, text messages and audio messages, when data services aren't available. Twitter says the firm can help it spread its reach to more users around the world, while allowing folks to stay up to date on the latest information without owning a smartphone.

"Through ZipDial, it's easy to engage with a publisher or brand by making a toll-free 'missed call' to a designated phone number," Twitter explained. "The caller will then begin receiving inbound content and further engagement on their phone in real time through voice, SMS or an app notification." The social network said some examples of content ZipDial provides includes sports scores, Tweets from famous people, such as politicians, athletes and more.

"This acquisition significantly increases our investment in India, one of the countries where we're seeing great growth, and also brings us a new engineering office in Bangalore," Twitter explained. Terms of the agreement were not disclosed.