Do you want to charge your iPhone, Android, or Windows Phone when your laptop is in sleep mode? Want to charge your smartphone when your laptop’s lid is closed? In this guide, we will see how to configure your Windows 10 laptop to charge your phone when your laptop is sleeping. Most PC users today own one or more smartphones. Although smartphones have improved dramatically in the last couple of years, battery technology hasn’t improved much. Because of this, most smartphones, including class-leading phones like iPhone and Samsung Galaxy, often struggle to make it through an entire day. Smartphone users who often travel relay on power banks to charge their smartphone on the go. Although power banks are pretty cheap these days, you could also use your laptop to charge your smartphone on the go. Charge your iPhone, Android or Windows Phone when your PC is sleeping Most of us know that smartphones can be charged when the laptop is running or awake. However, most users not aware of the fact that smartphones can be charged even when the laptop is in sleep mode. With default settings, most laptops don’t support charging external devices during sleep mode. You need to change the default power settings of USB in Windows as well as in BIOS/UEFI in order to charge your phone when your PC is in sleep mode. IMPORTANT: Not all USB ports get power when your PC is sleeping. Usually, only one USB port will get power. Most manufacturers mark the USB port that gets power when your PC is sleeping. Method 1 of 2 Make changes to USB Root Hub settings Step 1: Type Device Manager in the Start menu or taskbar search box and press Enter key to open the same. Alternatively, in the Run command box (use Windows logo + R to open), type Devmgmt.msc, and then press Enter key. Step 2: Once the Device Manager is launched, expand Universal Serial Bus Controllers to see all USB controllers. Step 3: Right-click on USB Root Hub and then click Properties to open USB Root Hub Properties. Step 4: Click on the Power Management tab to switch to the same. Here, uncheck the option labeled Allow the computer to turn off this device to save power. Click the OK button to save the change. If you have multiple USB Root Hub entries under Universal Serial Bus Controllers, you need to follow the instructions in Step 3 and Step 4 for all USB Root Hubs. Method 2 of 2 Change USB power settings under BIOS/UEFI If your smartphone is not charging even after performing the directions mentioned in Method 1, it could be because Always On USB feature is turned off under BIOS/UEFI. Follow given below instructions to enable Always On USB feature. Step 1: Reboot your laptop and press the appropriate key(s) when rebooting to enter the BIOS/UEFI. Step 2: Find USB settings. On my ThinkPad, USB settings are located under the Config tab. Check all tabs one after another to find USB settings. Step 3: Under USB settings, you will see an option labeled Always On USB or a similarly labeled option. Enable Always On USB option to keep the USB ports enabled during low power states. Step 4: On some laptops, you might see an option labeled Charge in battery mode under USB settings of BIOS. As the name of the option might suggest, if the Charge in battery mode is enabled, you will be able to charge your external device even when your laptop is running on battery. This might drain your laptop’s battery fast, but if you plan to charge your phone on the go using your laptop, you must enable this option. Step 5: Finally, save the new power settings. On most laptops, you can save the changes made to BIOS settings by pressing the F10 key. If you’re unable to save the changes, please check your laptop’s user manual or search the web for directions. Step 6: Boot into Windows 10. Connect your iPhone, Android, or any other smartphone and then put your PC in sleep mode. Your smartphone should continue charging even after putting your laptop into sleep mode.