Data Usage; Sim Card Manager (Dual Sim Models); Mobile Networks - Samsung SM-J106B User Manual

Settings

Data usage

Keep track of your data usage amount and customise the settings for the limitation.
On the Settings screen, tap Data usage.
Mobile data: Set the device to use data connections on any mobile network.
Background data: Prevent apps that are running in the background from using a mobile
data connection.
Set mobile data limit: Set a limit for mobile data usage.
To change the monthly reset date for the monitoring period, tap

SIM card manager (dual SIM models)

Activate your SIM or USIM cards and customise the SIM card settings. Refer to
or USIM cards (dual SIM models)
On the Settings screen, tap SIM card manager.
Calls: Select a SIM or USIM card for voice calls.
Text messages: Select a SIM or USIM for messaging.
Mobile data: Select a SIM or USIM card for data service.
Dual SIM always on: Set the device to allow incoming calls from the other SIM or USIM
card during a call.
When this feature is enabled, you may incur additional charges for call forwarding
depending on the region or service provider.

Mobile networks

Configure your mobile network settings.
On the Settings screen, tap Mobile networks.
Data roaming: Set the device to use data connections when you are roaming.
Network mode (single SIM models): Select a network type.
Network mode SIM 1 / Network mode SIM 2 (dual SIM models): Select a network type.
Access Point Names: Set up access point names (APNs).
Network operators: Search for available networks and manually register a network. You
can also set the device to automatically select the preferred network.
for more information.
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Change cycle.
Using dual SIM