The BBC reports, “Over the last few years, the mobile phone has emerged as a popular device for what at first may seem an unlikely user group: the deaf and other people who are hard of hearing.

Using the Short Messaging Service (SMS) functions on mobiles, people with hearing difficulties can communicate by typing messages into their phones.

By setting their mobile phones to vibrate, they can be alerted when a message comes in.”
More about deaf messaging here

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