Unexpected high data usage on the iPhone

I have since November changed from an iPhone 3G to an iPhone 4S and recently noticed a triple increase in data usage (with additional costs incurred). While I used below 250 MB before I'm now using 470+ MB. A Genius at the Bar recommended to switch off Location Services and Cellular Data, but that doesn't really make sense. Is anyone aware what services might consume exorbitant amounts of data (maybe in background processes)?


Is there an app, that monitors data transfers and could give me some clue as to what app or services use most data?


I've asked my operator to tell me if they would be able to let me know which services might have consumed so much data, but due to privacy regulations they are not allowed to access my data usage history.


I have also read somewhere that Siri uses a fair bit of data, but I haven't used that too much either.

iPhone 4S, iOS 5.0.1

Posted on Feb 27, 2012 5:17 PM

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184 replies

Oct 26, 2012 3:29 PM in response to Sophia

just remember, backup is to make sure that you don't loose anything, however you should not restore from the backup if you can manage without it. After the restore and upgrade to iOS6, you should observe your data usage for a day or two to confirm that your data usage is back to a normal level. Than you can try to restore from your previous backup.

Nov 1, 2012 3:20 PM in response to Sophia

Can anyone give any guidance why, when I'm connected to WIFI that I still see increments of cellular data? Surely this defeats the purpose of using the cheapest connection wherever possible.


As it happens I've been hammered this month and IOS isn't reporting accurate mobile data considering it thinks i've used 75 meg since my last reset but O2 are claiming on Monday I used 300MB.


Even after the 6.0.1 update I'm refreshing mail whilst connected to Wifi and seeing increments on the Cellular.

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Unexpected high data usage on the iPhone

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