61Chapter 15 . Settings
1. On the Home screen, tap Settings > Network & internet > SIM cards.
2. Toggle the switch next to the SIM card to enable or disable the SIM card. You can tap SIM slot
1or SIM slot 2 to edit the SIM name, change the color, view the carrier and SIM number.
3. Choose the preferred SIM for mobile data, calls or SMS messages.
Note:
1. If you disable a SIM card, you will be unable to use it to make calls, send messages, or use mobile data.
2. You can configure whether you want to select a SIM card manually or use the default SIM card each
time you make a call. If you choose to use the default SIM card, your phone will use that SIM card for all
outgoing calls.
3. Your phone supports only dual card dual standby single pass, which means you cannot use both SIM
cards for calls or data services simultaneously.
15. 2 Data usage
On the Home screen, tap Settings > Network & Internet > Data usage, and you can configure
the following settings:
Enable data saver
Tap Data saver and turn on the switch to enable it, and then some apps will be prevented from
sending or receiving data in the background.
Note: Still, you can have some apps allowed to use unrestricted data when Data saver is on. Tap Unrestricted
data and turn on the switch next to the app you want to enable using unrestricted data.
Enable mobile data
Switch on Mobile data to enable it. You can also swipe down twice from the status bar to open the
Quick Settings Panel and tap Mobile data.
View app data usage
1. Tap App data usage, select an app and you can view the app information and configure the
following data usage settings.
• Background data: Turn on the switch to enable usage of mobile data in the background.
• Unrestricted data usage: Turn on the switch to allow unrestricted data access when Data
saver is on.
2. Tap to adjust billing cycle settings, set data warning and data limit.
View WLAN data usage
1. Tap WLAN data usage to view the WLAN data usage of your device.
2. Select an app and you can view the app information and configure the data usage settings.
15. 3 VPN
A virtual private network (VPN) is a secure connection that allows you to send and receive data
across shared or public networks. You can use a VPN to connect to your company network and
email server.
Connect to a VPN
1. Before using VPN, set a Lock screen PIN, pattern or password on your device first. For more
details about setting a screen lock, see Security. Then contact your VPN administrator to obtain
the server information, username and password.
2. On the Home screen, tap Settings > Network & Internet > Advanced > VPN.
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