View signal strength, network connection status, and enable/disable mobile network and international roaming.
INSTRUCTIONS & INFO
From the home screen, press the Menu key.
Tap Data usage.
Tap the Mobile data checkbox to toggle on / off.
Tap OK. Note: Mobile data is on by default. Turning off the mobile data will not allow any data to be transferred over the wireless network. Wi-Fi access, voice function, and standard text messaging are still allowed.
To toggle data roaming on / off, tap More settings.
Tap Mobile networks.
Tap the Data roaming checkbox to toggle on / off.
Tap OK. 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.