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Hi Leon
Does your iPad or iPhone connect to the same Wi-Fi access point as your PCs?
If so, then the recent IOS 9 update was over 1GB – maybe that downloaded, although you should have received a pop up message asking whether or not you want to update/download it.
I don’t really pay too much attention to download file sizes as we are on unlimited Broadband, but I think that when my iPad was docked to my PC and I updated from IOS8 to IOS9, the download was over 1GB.
However, I noticed that when I had the iPad connected to our Router via Wi-Fi and the IOS 9.0.2 update message came through, the download was only around 90MB, much, much smaller.
The smaller size download (via Wi-Fi) might have some built in smarts that only downloads the difference between IOS 9.0.1 and 9.0.2 and not the full 9.0.2 had the iPad been docked with my PC whilst using the Broadband connection.
Cheers
Dennis
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