Mate 30 Pro (5G) User Guide-(LIO-N29,EMUI11.0_01,en-gb)

If your phone has two SIM cards installed, congure the settings for SIM 1 and SIM 2
r
espectively.
Use VoLTE to Make HD Video Calls
VoLTE (Voice over LTE) is an IP-based data transmission technology. After enabling VoLTE, it
can provide you with fast call connection times and high-quality voice and video calls.
Enable VoLTE
1 Contact your carrier to activate the VoLTE service for your SIM card. If both the primary
and secondary SIM card trays of a dual-SIM device support VoLTE, it can be enabled for
both SIM cards.
2 If two SIM cards have been inserted, go to Settings > Mobile network > Mobile data. In
the network settings area for SIM 1 or SIM 2, enable VoLTE calls.
• This f
eature may vary depending on your network provider.
• 5G services are only available in some countries and regions.
Make a Video Call
Video calls ar
e only possible when both parties are using VoLTE-activated devices.
1 Open Phone, touch the Contacts tab at the bottom of the screen, then select the contact
you want to call.
2 Touch
to make a video call.
During a v
oice call, you can touch
to switch to a video call.
Manage Data Usage
Open Optimiser, then touch Data usage to view data usage and manage network access.
View and Manage High Data Consumption Apps
1 You can nd out how much data your apps are using in comparison to each other by
going to Data usage this month on the Data usage scr
een.
2 Touch a high data consumption app to set mobile data, roaming data, or background data
usage limits for it.
View and Set the Network Access Permission of an App
On the Data usage screen, touch Network access, then change the settings for apps that
consume a large amount of data (such as video streaming apps) so they can only be used
when you are connected to a Wi-Fi network.
Enable or Disable Smart Data Saver
Enable Smart data saver to prevent apps from using mobile data in the background.
Settings
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