OK on android, just need to download the right app. Can export as doc or docx at will.
Built-in keyboard takes up too much screen, best to use external one. Choice depends very much on the host interface. I have used direct full-size usb host and micro usb via otg cable, both work ok in conjunction with wireless dongle keyboard and mouse. I used Anker kb-mouse-dualdongle.
But not as good as having a laptop with windows.
See Mac's post above.
