The Samsung S10 has a reverse charging function. Enter the shortcut menu at the top of the drop-down screen, and then find the wireless power share, click the icon to turn from gray to color to open, and then place another phone that also supports wireless charging back-to-back together to reverse charge. However, there is a premise that the discharge of S10 electricity needs to be more than 30% to reverse charging.
Step 1. First of all, you need to find [Settings] in the mobile desktop and click to enter
Step 2. Next we can find the [battery] option from the page
Step 3. Then we need to turn on the switch on the right side of [wireless reverse charging]
Step 4. Finally, we just need to open the device that needs to be charged and put it on the back of the phone to start charging