Inexplicable data usage messages

[KWall]

Got message from O2 Business on 14th Feb to say I had used 80% of my data, followed by a 100% message on the 15th even though I had turned off data. Told reset date was 7tj Mar (yesterday). Turned data on but received a message at 10.25am saying I had used 80%, followed by a message at 11.45am saying 100% used. I have never had an issue before and I actually use data far less than I ever did, as I am at home using WiFi majority of time. In any case I am not a heavy user generally. Help please.

[MI5]

@KWall 

Check the data use in your phone settings to see what's using it, but you'll need to call O2 on 8002 for any specific account related issues.

[KWall]

Thanks MI5. I will ring that number 

[VK1]

HI 

I have the same issue. Have you been able to resolve it? 

I've been on the phone to O2 for over three hours today!

[Oxonian]

@VK1 

If you are addressing that question to @KWall, it needs tagging thus. However, the thread is over three months' old and @KWall has not been online on this forum since 8 March 2024. Hence, I would not hold my breath waiting for a reply. 

A couple of suggestions for you to try in the meantime :-

1. close all of the apps on your mobile and just re-open them as you need them. Keep an eye open for when you data is used, as one troublesome app might be the issue.

2. have a look in your 'phone's Settings to establish which apps are using your data. On a Samsung Galaxy, this is in Settings > Connections > Data Usage > Mobile Data Usage. 

3. make sure that your WiFi is working properly and is switched on. If your WiFi cuts-out, your handset will reconnect to mobile data, which could be the cause of your problem.