UK data roaming charges abroad vary depending on the nature of the phone agreement (either pay as you go or monthly contracts).

Here you can shut off "Data Roaming" so you won't feast on high-priced data but can still make phone calls.

To verify that yours still has this setting, tap the Settings application's General heading and then its Network heading; on that screen, the "Data Roaming" switch should be off.

WorldSIM products include the Data Roaming USB, data SIM card and dual SIM mobile phone.

Its '1-Card-Multi-Number' (1CMN), Multi-SIM data sharing, Data Roaming Zone and BlackBerry service plans are especially welcomed by frequent travelers.