It didn’t work in android. The android will only recognize the internal wifi chip. maybe you can try to disable the internal wifi through the method in one the above link, but i haven’t tried. It does work in windows out of box. but in windows you have a lot more better options. so this usb adapter is pretty much useless. oh, yes, i double checked usd adapter. It is RTL8723, the same as the built in one.
There are LOTS of different versions of the RTL8723 – rtl8723be, rtl8723bs, rtl8723ae, rtl8723au, etc. They are not the same thing and may have different configurations and functioning. Know which one you have. Some of them may not have the driver in the Kernel you are using and so you may have to build it (for Linux, dunno about Android) from https://github.com/lwfinger/rtlwifi_new.