I didn't bother to read the 87 previous comments, but for the record, the distinction between iMessage colors and whatever green SMS color is because iMessages are FREE of charge and for most people, SMS messages are NOT free.
If the iPhone pings the intended recipient and finds another iPhone, it sends an iMessage. If it does not identify an iPhone it sends a text (SMS) message. Sometimes it will fail to identify an iPhone and will send an SMS message because there was no identification. And it has little or nothing to do with Wifi. I can use my cell carrier and send iMessages.
It isn't a subtle war or a cheap shot. It is a way for the sender to see whether a message will incur a cost or not.
It is more likely a typo, since it is used correctly elsewhere in the document. That's as silly as blaming Geigner for "Craig Shirely" in the second paragraph when the name is spelled correctly all through the rest of the post.
Ackerman's article now contains the following update:
This article was amended on 20 March 2014 to remove statements in the original that the testimony by Rajesh De contradicted denials by technology companies about their knowledge of NSA data collection. It was also updated to clarify that the companies challenged the secrecy surrounding Section 702 orders. Other minor clarifications were also made.
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