IOS 8 High Cellular Data Usage

Thank you for posting your experience

A small question - did you have notes running or using cellular data when you had the data drain? Or were they shut off?

Thanks

You may want to consider bringing this to an Apple store - see if they have anything to offer

Generally its because icloud usage is turned on (even with cellular)

Settings ->iCloud -> iCloud Drive ->Use Cellular data (off)

Or select only those apps you want. .

iCloud Drive is not turned on. Documents & Snycr. is still wasting MBs.

To cut a very long story short, after trying many things suggested in this thread (restore from back-up, clean start, remove suspect apps, disable services selectively …), none of which stopped my iPhone 5S from racking up large transfer volumes under Documents & Sync on cellular (and having awful battery life), this is what worked for me:

1. Log out my Retina MBP from iCloud (clicking through many dire warnings).

2. Log out my iPhone from iCloud (ditto).

3. Log rMPB back into iCloud. Enable desired services.

4. Disable Handoff on rMBP. (It's "Allow Handoff between this Mac and iCloud Services" in the General System Preferences pane.)

5. Log iPhone back into iCloud. Enable desired services.

6. Disable Handoff on iPhone (Settings->General->Handoff & Suggested Apps)

I have not yet dared to turn Handoff on again. I can live without it — and I just love the battery life I'm getting: best I can remember.

Just in case you wonder, once Handoff is disabled, Bluetooth can be enabled on both devices. I'd had it turned off on the iPhone before the steps above.

My suspicion is that some Continuity-related database somewhere on my rMPB was corrupt, making it impossible for iCloud-connected devices ever to believe that they were properly synchronised. Except, if that's the case, why did I never have a problem with my iPad Air, which also has cellular data? Truth is, I don't know, and, having tried so many things, I can't even be sure if it's the steps above that fixed the problem.

The same happens here, just checked my bills, used 3.5GB within a day while I have my home wifi connected all day.

Anyone have a solution?

Many thanks. Will limit the apps that can use data

Maybe its streaming media through twitter thats inflated the figure,ie: youtube and soundcloud clips etc?

Seems excessive though

Ok chief - I'll give it a go

I have an iPhone 4S without LTE (4G) but the same problem with the huge data usage.

I have an extended warranty with Geek Squad.

Webdevandy, i had mine replaced about a month ago (AppleCare). It did not fix the issue.

Has anyone seen this being resolved by IOS 8.2?

It seems to be the apple mail app for me too although n ot 100% sure as I use that all the time so expect it to be much greater than any other.

Not sure if it will resolve this issue, but iOS 8.3 is now available for download. It appears to resolves a number of issues, and is probably worth a try.