pecially designed for Samsung Galaxy S10+ Smart Phone,the external battery charging case has precise cutouts for speakers,charging ports,audio ports and buttons.
You can sync your phone to computer after taking the battery case off.
The power button serves as a power on/off button and also serves as a swtich between phone charging mode and self-charging mode.
Push power button to turn on battery pack.you should see one or more blue LEDs light up.
If you can see blue LEDs light up,it means the battery pack is on.
If you see no blue LED light,then push the power button again to turn on battery pack.
Plug in your cellphone into the battery pack when it is on, the battery pack should start charging you cellphone.
If not charging, please push the power button to switch battery pack to phone charging mode so it will start charging your cellphone.
To charge the battery pack itself,connect battery pack to a micro USB cable connected to wall charger,the battery pack should now be charged and the blue LED flashes.