Balance disappeared !

[Anonymous]

I had a balance of more than £50 a week ago - I went on a cruise to the Baltic, didn't make any calls, sent 2 short messages and received 2 short replies.  Also, received about 20 CB messages which I didn't click on because I didn't know what they were - now my balance is £0.  What's happened ?

[Anonymous]

MI5

Samsung A3 (2017)

[MI5 · Accepted solution]

If you swipe down from the top of the screen you will see some boxes.
One of them will be mobile data.
If you tap on it it should go grey which means data is off.
Stuff like your weather app will be using data all the time and any other apps that poll data in the background.

[Anonymous]

MI5

Done. Thank you.

Thing is I never had this problem before.  My balance has been fairly constant for months as I don't make much use of my mobile phone.  I mostly use my landline for calls and my laptop for email and web.

[MI5]

The cost of data at home for that kind of background usage is negligible, but at £6 per mb or worse when travelling it doesn't take long to eat through your balance.

[Anonymous]

MI5
Thank you very much for your help.

Just to be clear, you wrote  "Stuff like your weather app will be using data all the time and any other apps that poll data in the background." - is this the case, even when the phone is switched off ?

Although I've since remembered that, in addition to sending a couple of texts, I also switched the phone on to use the camera.

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@MI5 wrote:
The cost of data at home for that kind of background usage is negligible, but at £6 per mb or worse when travelling it doesn't take long to eat through your balance.

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[MI5]

No, apps can't update with the phone switched off although the camera could use data if you have location services turned on for the camera.
This is used to tag photos with the location they were taken and is usually turned on by default.

[MercedesS]

Hello @Anonymous, welcome to the O2 community! 

We are happy to see that @MI5 advice helped you at the end 

Please let us know if there’s anything else we can do! 

Thanks @jonsie, @Cleoriff, @chrisymon and @MI5 for your amazing help and support 

[Anonymous]

Update:

Thank you MercedesS   I am indeed grateful for the help and support provided by  jonsie, Cleoriff, chrisymon and MI5 . 
The possible explanations suggested were plausible, however, it appears the cause may have been something else.  I had been unable to contact O2 itself before turning to the community but eventually I had a phone conversation with O2 and it seems the charges related in some way or other to calls made to my number but which I didn't answer.  Anyway, the outcome was that O2 refunded the charges and I'm happy with that. 
 

[MI5]

That would be possible if voicemail messages were left but glad you got refunded anyway.

[Cleoriff]

A good outcome. Thanks for reporting back @Anonymous