Linked by Thom Holwerda on Wed 27th Apr 2011 21:40 UTC
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Member since:
2008-07-28
Scott Forstall already said, Apple chose a 2mb cache of local location points... Turns out that 2mb can hold over a year's worth of data... The next OS update will prune the cache to only the last 7 days... I recon that will make the location service both faster and more accurate, so plenty of win here.
And to answer the first part of your question, the cache allow much faster location services, as it can take minutes for the GPS to work and also it allows great accuracy than GPS alone would offer. I would be surprised if all other location aware devices DIDN'T use a similar system