I think 160 characters in Internet protocol with padding of parity bits and making of a packet along with ack message from the recipient, ends up as something like 230 bytes.
Nevertheless, in the times of massive video files, this is almost free.
best
________________________________
From: Jim Saklad <jimdoc@me.com>
To: apple-iphone@yahoogroups.com
Sent: Sunday, 11 March 2012, 17:32
Subject: Re: [apple-iphone] Blue or Green
> Does that mean that if you have a pay as you use data I can send iMessage to iMessage friends or family at no cost to me or them. If I use wifi does that make a difference?
iMessages cost exactly as much as the actual data used costs.
1000 messages of 160 characters each will contain a total of 160 kBytes of data, or 0.16 MB, and that's what you will pay for, at whatever your data rate is.
Not free, but almost.
For example, AT&T's most *expensive* data subscription gives you 300 MB of data for $20/month. At that rate, 1000 iMessages of 160 characters each will cost, in total, less than 11 CENTS.
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Jim Saklad mailto:jimdoc@me.com
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