idaeus: it would be very useful to know if there is a 100,000 tile limit. I don't see anything about this on the Collector pages and the tile package article you linked to says "There are no restrictions on size �?? you are limited by the size constraints of your device." Also, how do you know how many tiles are in a tile package? I am working up to finer/larger tile packages as you suggest. The 900 MB one worked fine. Also, I have gotten the 3.3 GB package to work on a different Android device. So I think there is not a hard 2GB limit. But it would very useful to know if there are limits on file size/number of tiles.
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