No connection to the internet

[HM]

I am in Croatia . I have no connection to the Internet. I am unable to get WhatsApp messages or connect to my Web.

This happens every time outside of the UK

What?

[MI5]

@HM 

If you have an iPhone change your apn to “mobile.o2.co.uk”

Also, for any phone, try manually searching for a different network. 

[Cleoriff]

@HM 

You may have a roaming bar on the account. In which case you need to contact customer services and ask them to lift the bar Guide: How to find help & contact O2 

It's free to call from abroad.

Best of luck and welcome to the forum

[MI5]

Just an fyi.
A roaming bar would effect calls too....

[Cleoriff]

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@MI5 wrote:
Just an fyi.
A roaming bar would effect calls too....

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I know it usually does, but worth a try if your advice fails....

[MI5]

Also check that data roaming is selected in network settings.

[PhoneChanger]

@MI5 I thought that iPhone APN was 'idata.o2.co.uk'?

[Cleoriff]

@PhoneChanger 

It is, but often needs changing to work abroad. Annoyingly....

[jonsie]

It needs changing when they are on the incorrect data bolt on. Usually happens with a tariff change or upgrade.

[Luke30]

Check your internet settings because you could have the Wong settings to use the internet. If your internet settings are OK then you will need to call o2 as there need to be done on your account to let you use your phone out of the UK.