One year after Graph Search was introduced for wider data mining, Facebook appears to be releasing the tool on smartphones and tablets, according to VentureBeat.

The said feature has been rolled out to only a portion of its iPhone user base. It is not yet known when the Graph Search will be made available on Android devices or for users whose Facebook accounts use non-English languages. Last March, the social network's engineers were working to add more content for the tool's search results, such as comments and statuses, the report detailed.

Graph Search's arrival on some mobile devices means data mining on the social network has become easier, the report noted.

From a big data point of view, Graph Search going mobile is also an important milestone. The said tool is a good example of a technique that uses random groups of words from millions of users to come up with clean information. This technique is called natural-language processing (NLP), the report explained.

With Graph Search reaching more mobile gadgets, more users will see all the available data on the search tool. This could potentially present privacy issues about the social network, VentureBeat reported.