4 percent, official data show. During the past 12 months 3.2 million mobile users have been added according to data released by the Central Bank bringing the total to 16.
Sri Lanka only has a population of 20 million people, but with five operators competing in the market some people now own multiple subscriber indentify modules (SIM).
By owning multiple SIMs, cost conscious subscribers can get the benefits of different packages.
The government recently said it will limit SIM ownership to five per person, though the exact logic behind the move is not clear.
Wireline users grew by 19,917 to 889,077 in the third quarter, from a year earlier.
Internet and wireless subscribers grew by a steep 50 percent to 360,000 adding 120,000 new subscribers.
Sri Lanka Telecom, the island's only wireline operator said said earlier its broadband users topped 200,000 in the third quarter.
Fixed wireless users grew 3.8 perce