UK operator Virgin Media O2 (VMO2) and Mavenir completed a proof-of-concept trial of technology designed to improve call clarity for customers suffering hearing issues without having to make changes on their phone.

Unlike device-based accessibility features or third-party apps, the service works entirely within the operator’s network. This allows participants to make and receive calls without needing to change their device or how they use it.

In the test participants completed a short, automated hearing test to identify how they perceive different sound frequencies. Personalised hearing profiles were then generated and securely linked to their mobile numbers, enabling the network to adapt how speech is delivered to them during calls in real time.

Following the trial, nearly 90% of participants reported improvements in call clarity, with many noting reduced listening effort, fewer misunderstandings and a more natural calling experience.

Jorge Ribeiro, director of core networks at Virgin Media O2, stated the trial was about using intelligence within the network to improve the experience without asking customers to do anything differently.

“We are encouraged by the early results from this proof-of-concept and are excited to explore how this type of technology could support more accessible services for our customers in future,” he said.

While still at an early stage, O2 said it is encouraged by the results and is exploring how the technology could be developed further to support accessible services at scale.

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