iPhone users, are you curious why some text messages are blue and others are green?
This may seem like a no brainer for some of you, but it's not, here's why; if you're exchanging texts between a fellow iPhone owner, the messages will show blue.
A blue message means you're using Apple's i-message technology.
iMessage uses data or wi-fi instead of normal SMS text messages, which are exchanged over a traditional voice network.
So if you send a message to someone without an iPhone, that message will show up in green because
The normal text.
How ever it's possible for two iPhones users to send an SMS.
This means that you or your friend has imessage turned off.
To activate it.
Head to settings.
Tap messages and switch imessages on.
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I'm Dan Graziano for c|net.
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