View signal strength, network connection status, and enable/disable mobile network and international roaming.
INSTRUCTIONS & INFO
From the home screen, tap Menu.
Scroll to then tap Settings.
Scroll to then tap Connectivity.
Tap Data Services.
Tap the Data Services slider to enable or disable cellular data. Note: Mobile data is on by default. Turning off the mobile data will not allow any data to be transferred over the wireless network. Voice function, and standard text messaging are still allowed.
Tap the International Data Roaming slider to enable or disable data roaming. Note: Data roaming is off by default. Enabling Data roaming will allow the device to attach to foreign wireless network signals when available. International roaming charges will apply. This setting does not apply to voice access which requires additional provisioning for usage on international networks. To learn more, visit the AT&T International Calling website.