TCL 10 Pro User Manual page 25

Your phone only supports nano-SIM cards. Do not attempt to
insert other SIM types; otherwise this may cause damage to
your phone.
Charging the battery
You are advised to fully charge the battery (
is indicated by a percentage displayed on screen while the phone
is powered off. The percentage increases as the phone is charged.
To reduce power consumption and energy waste when the
battery is fully charged, disconnect your charger from the plug;
switch off Wi-Fi, GPS, Bluetooth or background-running
applications when not in use; reduce the backlight time, etc.
1�2�2 Powering on your phone
Hold down the Power key until the phone powers on, unlock your
phone (Swipe, PIN, Password, Pattern, Fingerprint, or Face) if
necessary and confirm. The Home screen is displayed.
If you do not know your PIN code or forget it, contact your network
carrier. Be sure to keep your PIN code secure.
24
). Charging status