Samantha Perry (left) and staff member Morales-Espinoza at The Learning Center for the Deaf use a smartphone to sign.
(Bill Greene/Globe Staff)
For deaf people, who primarily communicate by sign language, smartphones that come with video-chat capability have been life-changing. Because of the ease and spontaneity with which the deaf can now hold conversations, relationships have deepened, old dependencies have been shed, and a generation is growing up without the acute sense of isolation with earlier generations struggled.
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