The provision of mobile data when outside the UK is influenced by a couple of factors.
1. Fundamental to mobile data supply is having our APN, the correct data settings, correctly installed on your handset. You won't be able to access mobile data abroad if your phone's settings aren't correct.
2. After that, it's the capabilities of the foreign network supplying the signal to your phone, that counts. You should automatically connect to a network that O2 have an operating agreement with, but occasionally, there may be an issue with signal supply.
If you are roaming and find you can only access data when linked to a WiFi service, it's most likely your data settings aren't correct.
With WiFi access, here's how to check and change your data settings:
Click here https://www.plan.com/apn-settings Go to IOS at the top of the page and select your current operating system. From there, follow all the steps, to completion.
Click here https://www.plan.com/apn-settings/android and follow all the steps, to completion.
Click here https://www.plan.com/apn-settings/blackberry and follow all the steps, to completion.
Click here https://www.plan.com/apn-settings/win-phone and follow all the steps, to completion.
Even if your settings appear correct, it's best you reset them, just to make sure.
If, after installing your data settings you are still unable to access mobile data, there could be a problem with the foreign network you are linked to. Through the settings option on your phone, you will be able to manually select another network.
Settings > Mobile Data > Mobile Data Options > Mobile Data Network > Manual > Select
Apps > Settings > Mobile Networks/More Networks > Network Operators > Select
If you've used any roaming mobile data allowance and a bar has been triggered we will have notified you via our Captive Pages* mechanism, text message, email or any combination. These messages aren't spam. Please act on the guidance included in them.
*If you have a spending limit set on your service and have reached that spending limit, which has automatically triggered a Captive Page, this gives you options to increase your spending limit or cap and purchase bolt-ons directly from your phone, allowing service to be restored while staying fully in control of costs.