EE has said it will invest £275m in its services in 2014, including its 2G network, as it looks to improve call quality to keep pace with demand.
The firm, which has focused more on pushing its 4G technology in recent years, said that around 11,000 2G sites will be upgraded. EE said improving call quality was vital as call volumes are up 25 percent on 2012.
Chief executive Olaf Swantee said the numbers proved that it was important to make sure its voice network kept pace with data improvements.
“For the majority of our customers, being able to make a phone call when they need to is still the vital aspect of the mobile experience. Innovative, high-speed data services receive most of the attention in the mobile industry as they are changing the way people communicate, connect, trade and interact,” he said.
“However, we carried more voice calls on our network than ever before this year, and we know that call reliability is essential for our customers.”
The firm said a further 7,000 3G sites will be upgraded too. EE is using technology from Huawei, in a deal first announced in 2011, despite concerns from some quarters about the security of the Chinese vendor.
The investment push comes as rival operators O2, Vodafone and Three all make enhancements to their networks to rollout 4G services and widen coverage.
The government is also hoping mobile services could provide broadband to the final 10 percent of the UK and has set aside £10m to test solutions such as 4G and radio links in 2014.
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