View signal strength, network connection status, and enable/disable mobile network and international roaming.
INSTRUCTIONS & INFO
From the home screen, drag down from the Notification bar.
Tap the Settings icon.
Under the 'Networks' tab, scroll to then tap Tethering & networks.
Tap Mobile networks.
To toggle mobile data on/off, tap Mobile data.
Tap Standard 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. Wi-Fi access, voice function, and standard text messaging are still allowed.
To toggle Data roaming on/off, from the 'Mobile networks' screen, tap International data roaming.
Tap Standard data. 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.