The keyboard doesn't come up when needed, just a mic symbol. I've tried changing the default voice type on Language set-up but it won't change. I can't even enter my wi-fi password.
I'll do my best to help you out.
Since this is an old Android version.
Go to settings>language and input (or maybe in this case input)> from here you should be able to choose the keyboard, try by tapping different options until you see the choice of activating different keyboards.
Pan easier way is to use a regular PC, log in to our gmail account by going to play.google.com/store, and download a keyboard of your preference, it will download automatically on your tablet. After it download, once you tap the keyboard icon, it will take you step by step on how to activate it in rider to use it. Try Swiftkey. Read More At : 10.1" Android Tablet Grey Tablet Android 4.1, LCD......