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Our selection for innovation of the month is T-Mobile USA's caller verification technology, which gives customers enhanced protection from the widespread and growing nuisance of so-called scammers and spammers.


  • In January 2019, T-Mobile became the first carrier in the US to offer caller verification technology, which aims to prevent scammers and spammers from being able to spoof someone's caller ID. This occurs when scammers temporarily hijack a phone number to match the area code and three-digit prefix of the person they are targeting, making the incoming call look familiar.
  • The latest technology builds on T-Mobile's previous initiatives to combat unwanted calls, which have seen it flag over 8.9 billion calls as scam over the past 18 months.

Features and Benefits

  • Assesses how a telco is developing new types of services.
  • Examines the details behind T-Mobile USA's deployment.

Key questions answered

  • What is Ovum's innovation of the month for January 2019?
  • How is T-Mobile USA addressing spam and nuisance calls?

Table of contents

Ovum view

  • Summary
  • T-Mobile is first in the US to add caller verification
  • Next steps: add more devices and encourage broader adoption


  • Further reading
  • Author

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