Discrepancy between reported data usage on my phone and O2 account

[Anonymous]

I have tried unsuccessfully to get the breakdown of my current monthly data usage as O2 has notified me that I have used up all 500MB of my monthly data allowance but my phone tells me I've only used up 396MB. I know therer can be a discrepency but 100MB seems unlikely. Can somebody help before I push this onto twitter?

[jonsie]

Is this an iPhone? 

Bear in mind that the day's data usage updates at midnight....

[MI5 · Accepted solution]

You need to call and speak to CS and they will tell you how much data was used at what times / dates.
Or, wait until after this months bill is produced and there will be a breakdown in your My O2, but it's best to sort it now.
http://www.o2.co.uk/contactus

[gindygoo]

Definitely use the 202 calling option rather than live chat though, as live chat aren't really much use for anything account related.

Unless of course you're payg, then dial 4445.

Let us know how things pan out.

[Anonymous]

The data usage will always differ, that's it normally says to be used as a guide only and that the networks calculations should always be used.

[MI5]

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@Anonymous wrote:
The data usage will always differ, that's it normally says to be used as a guide only and that the networks calculations should always be used.

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True, but by 20% ?

[Anonymous]

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@MI5 wrote:

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@Anonymous wrote:
The data usage will always differ, that's it normally says to be used as a guide only and that the networks calculations should always be used.

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True, but by 20% ?

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Granted. there is always a variation 1 - 10% on mine. Agree 20% a bit concerning and best to get CS to check.

This is why I don't have iPhones!

[Anonymous]

Don't forget data useage also involves an upload part as well - this could easily explain the difference. There is usally a warning on the measurements taken on the phone that figures between the phone and the service provider may differ.