CelcomDigi

Digi launched its 3G network on March 19, 2009, utilizing the 850 MHz frequency band. The network was capable of delivering speeds of up to 21 Mbps using HSPA+ technology. By 2013, Digi had deployed 21 Mbps HSPA+ across its network. Celcom, another major player in the Malaysian telecommunications market, launched its 3G services on June 15, 2006 using B1, with all sites upgraded to 14.4 Mbps. Celcom further enhanced its network by deploying UMTS900 and 42 Mbps DC-HSPA+ technologies. The 3G network was gradually phased out, with CelcomDigi announcing the shutdown of its 3G services in stages starting December 6, 2021, and concluding by December 31, 2021, in line with the National Digital Network Plan (Jendela).

CelcomDigi's 4G network has undergone significant development over the years. Celcom Axiata commercially launched LTE using the 2.6 GHz band in the Klang Valley on April 22, 2013, with a network expansion program that included refarming the 1800 MHz band for LTE1800. Digi launched its LTE services on July 5, 2013, in high-traffic spots within the Klang Valley using the 2.6 GHz band. By the end of 2015, Digi had introduced a 2-carrier 150 Mbps LTE-Advanced service on 30% of its network, with VoLTE launched on October 26, 2016. In December 2013, Celcom and Digi entered into an agreement with Telekom Malaysia for the provision of backhaul services for LTE. The Malaysian Communications and Multimedia Commission (MCMC) named nine recipients of 20 MHz (2x 10 MHz) of 2.6 GHz spectrum, including DiGi, Celcom Axiata, Maxis, and U Mobile. The 4G network has been continuously modernised, with CelcomDigi initiating a program in 2023 to integrate and modernise the largest 4G network in Malaysia, involving 18,000 sites and the deployment of the latest LTE and 5G-ready technologies.

As of December 2024, CelcomDigi has not yet commercially launched its 5G network. However, the company has been actively preparing for the deployment of 5G services. CelcomDigi submitted a proposal for the deployment of Malaysia's second 5G network to the MCMC on August 1, 2024. The company has been upgrading its infrastructure with 5G-ready technologies, including massive multiple-input multiple-output (MIMO) and multiband remote radio units (RRU). CelcomDigi's CEO, Datuk Idham Nawawi, stated that the company aims to build the most advanced 5G network to accelerate widespread adoption for consumers and enterprises. The proposal outlines plans to leverage existing infrastructure and financial strength to position Malaysia as a regional leader in 5G and AI development.