How to turn data roaming and data services on/off on my Samsung Galaxy S5

Click each step to see the action. You can also click the picture or use the arrow keys.

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When abroad, data roaming is required to use email, web browsing and other data services. Please note that data roaming charges will apply.

To avoid unwanted roaming charges, you can turn off data roaming. You can also turn off data services altogether. This way, your Samsung Galaxy S5 will only transmit data over Wi-Fi.
1. Touch Apps.
2. Touch Settings.
3. Scroll to and touch More networks.
4. Touch Mobile networks.
5. Touch Mobile data to change the setting (e.g., from off to on).
6. Mobile data is now on.
Touch Mobile data again to turn it off.
7. Touch Data roaming to change the setting (e.g., from off to on).
8. Touch OK.
9. Data services are now on.
Touch Data roaming again to turn data services off.