Before the days of iMessage, WhatsApp, and RCS texting, instant messaging (IM'ing) ruled the roost - here are six iconic clients that defined the era.
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What Is SMS? Your Guide to Text Messaging Basics
Trillions of text messages are sent and received via SMS-enabled devices every day, but have you ever stopped to ask, “What is SMS, exactly?” One of the oldest forms of mobile messaging, SMS messages ...
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