1. First of all, we need to open the desktop of the mobile phone and click the \"Settings\" icon on the desktop to enter the setting interface of the mobile phone.
< br >
2. At the bottom of the setting interface, we need to find the \"battery\" option and enter the battery option interface.
< br >
3. In the battery options interface, we can find the option of \"dual engine flash charge\".
< br >
4. Next, we need to click the switch next to the option and turn the switch on to enable the dual-engine flash charging function.
< br >
5. Finally, after opening, when we use the original charging head to charge, the dual-engine flash charging interface will be displayed when the phone is started.
Vivo 3I's standard version of the double-engine fast charge basically means that a setting is carried out in the setting, and a switch machine of the standard fast charge is opened, and then a connection is made after connecting a charger command of the device, basically, a wall clock can be carried out, if you do not need to transfer, You can do one on him directly is turn off that quick security on it.
You can enter the phone Settings -- battery\/more Settings -- Dual engine flash charge -- After opening the dual engine flash charge, you can use the flash charge function to quickly charge