1. Find "Mobile networks"
Slide your finger downwards starting from the top of the screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-be836463-f469-48c5-acf4-7320a9682983.png?width=208&height=372)
Press the settings icon.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-3e66e467-d56a-42ff-930c-3129d9b372a5.png?width=208&height=372)
Press More.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-881626df-99cf-479f-ae16-b34c8aefc4eb.png?width=208&height=372)
Press Mobile networks.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-8c0f91f0-9136-48dc-a2b5-ddc6b8da42ec.png?width=208&height=372)
2. Turn data roaming on or off
Press the indicator next to "Data roaming" to turn the function on or off.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-4f60e55b-112a-4e2e-9b27-0f33aa82cfe7.png?width=208&height=372)
3. Return to the home screen
Press the Home key to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7140723-f-e27db3c9-0898-4027-a7ce-1e8ce0484574.png?width=208&height=372)