If MNOs tactically decide to provide multiple channels for phone number verification, then they need to consider the merit and use case for each channel and market this accordingly. For example, a text to speech call can be used in areas where the literacy rate is low. In the case of multiple channels, pricing needs to be designed such that the maximum revenue is gained overall. For example, one channel can be used as a secondary method in case of failure of the primary channel – meaning that the revenue associated with phone number verification is booked in case of failure on the primary channel.
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