The following represents just one set of tests on just one evening at just one location in the Boston suburbs, but perhaps someone will find it useful.
Thanks to Jacob Barss-Bailey who made the measurements (on August 1st) and gave me permission to reprint them. From Jacob's email:
The latency I was able to see last night, which was likely on an unloaded network (it was quite late, and I'm out in the country) was between 500ms and 2500ms, about what I was expecting. About 75% of the time, I was seeing latency between 500ms and 700ms though, so it seems that latency is usually pretty good, but when its not, its pretty bad.
FYI the bandwidth I was seeing downloading random data was between 60kb/s and 120kb/s, heavily skewed towards the top of the range.
Obviously, as it's an iPhone, these are measurements on AT&T's EDGE network.
Well it's consistently better than dial up...
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