Zain Bahrain announced on Saturday that it will invest $100m over two years to further modernise its network infrastructure.
This investment will enable Zain Bahrain to "adequately service growing customer base and demand", the telecom operator said in a statement.
The company said as part of the investment it will build a new data centre and has contracted consultants to work on the project.
"We expect this project to be completed in two phases," said Zain Bahrain's projects manager Adham Bardooli.
"The first phase will be operational in November and the second and final phase will be completed by February 2013," he added.
Mohammed Zainalabedin, the company's general manager, said: "The network upgrade, including continued investments in 4G/LTE, will give Zain Bahrain the technological muscle to add even more products, services, and features to its extensive portfolio.
"Our objective is to ensure that our network infrastructure keeps pace with our growing customer base."
Last month, the Zain Group reported a 1 percent rise in quarterly profit, missing analysts' estimates.
Zain said it made net profit of KD70.97m ($251.58m) in the three months to June 30. That compared to profit of KD70.26m in the prior-year period, the company said in a bourse statement.
Analysts forecast average profit of KD76.9m, in a Reuters poll.