1, first of all, we have to charge others, then the other party's mobile phone must also support this function, after this condition, we need to open the setting function on the desktop.
< br >
2, Enter the setting, slide down, we can find the function of the battery Settings, open it, this time we also need to make sure that the battery of your phone is greater than 20%.
< br >
3, after entering the battery Settings, the top is the remaining power of our phone and the time that these power can last, and then look down we can see that there is an unlimited reverse charging function, turn it on.
< br >
4, after opening, the phone to be charged and Huawei mobile phone back-to-back close, you can charge, if you feel that the charge is good, you can turn off the function