TCL 20R 5G - SIM Card & Mobile Network; Aeroplane Mode; Hotspot & Tethering

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Super Bluetooth
Once two or more BT devices are connected, Super Bluetooth will be enabling
you to adjust the volume and audio balance of each BT device, and calibrate a
connected speaker to better synchronise sound with the video on your smartphone.
To get a better listening experience, we suggest that your device connects with up
to four audio devices simultaneously.
A calibration reminder will pop up every time a connected Bluetooth
speaker changes. A third or fourth Bluetooth device can only be added if
you are connected to a 5GHz Wi-Fi network.
4.3 SIM card & mobile network
Go to To Settings > SIM card & mobile network > SIM card settings > SIM 1 >
Roaming Mode to enable data roaming, set your preferred network type, check
the network connection you are using or create a new access point, etc.
SIM cards settings
(1)
Touch to choose SIM 1 or SIM 2 for mobile data, making calls and sending SMS
messages.
5G
The default setting for the 5G network switch is ‘on’, allowing you to enjoy surfing
the internet using a fast network service.
The Smart 5G function will help to save battery life by limiting 5G network usage
in some situations.
Normal saving mode: 5G network usage is disabled when mobile data transfer
is at a low level and the screen is off.
Super saving mode: 5G network usage is disabled if you are not playing games,
streaming videos or using apps which you have pre-set with an exemption.
Exempted apps are allowed to access the 5G network without any restrictions.
They can be set by touching Manage apps.
(1)
Dual SIM only.
Data usage
The first time you turn on your phone with your SIM card inserted, it will automatically
configure your network service: 2G, 3G, 4G or 5G.
If the network is not connected, you can turn on mobile data in Settings > SIM
card & mobile network
Data saver
By enabling Data saver, you can reduce data usage by preventing some apps
from sending or receiving data in the background.
Mobile data
If you do not need to transmit data on mobile networks, turn off Mobile data to
avoid incurring significant charges for data use on local operator mobile networks,
particularly if you do not have a mobile data agreement.
Data usage is measured by your phone, and your operator may count
differently.
Aeroplane mode
Turn on Aeroplane mode to simultaneously disable all wireless connections
including Wi-Fi, Bluetooth and more.
Hotspot & tethering
To share your phone's data connection via Wi-Fi, Bluetooth and USB, or as a
mobile hotspot, go to Settings > SIM card & mobile network > Hotspot &
tethering to activate these functions.
To rename or secure your mobile hotspot
When your mobile hotspot is activated, you can rename your phone's Wi-Fi
network (SSID) and secure its Wi-Fi network.
• Touch Settings > SIM card & mobile network > Hotspot & tethering > Mobile
hotspot.
• Touch to rename the network SSID or set your network security.
• Touch OK.