Settings74Limiting data usage1 On the Settings screen, tap Data usage and tap the Set mobile data limit switch toactivate it.2 Drag the limit adjustment bar upwards or downwards to set the limit.3 Drag the warning adjustment bar upwards or downwards to set a data usage alert level.The device will alert you when the warning level is reached.SIM card managerActivate your SIM or USIM cards and customise the SIM card settings. Refer to Using dual SIMor USIM cards for more information.On the Settings screen, tap SIM card manager.r Voice call: Select a SIM or USIM card for voice calls.r Text messages: Select a SIM or USIM card for messaging.r Data service network: Select a SIM or USIM card for data service.r Smart dual SIM: Set the device to allow incoming calls from the other SIM or USIM cardduring a call.When this feature is enabled, you may incur additional charges for call forwardingdepending on the region or service provider.Mobile networksConfigure your mobile network settings.On the Settings screen, tap Mobile networks.r Data roaming: Set the device to use data connections when you are roaming.r Access Point Names: Set up access point names (APNs).r Network mode SIM 1 / Network mode SIM 2: Select a network type.r Network operators: Search for available networks and manually register a network.