Some questions on Digihome TV

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My first Smart TV is a Digihome 32. So far it seems very good but I have a few questions I have not found answers to, despite searching. First, the manual says a mouse can be used via the USB socket but I have not seen any sign it is connected (I have tried both a wireless and a wired mouse). Second, is how to edit text for names, passwords, urls, etc. in Smart TV, at times when the onscreen 'keyboard' fails to appear. There are letters on the number keys of the remote, but how do you activate them, assuming that works?



Advice would be very welcome.



Thank You!!!



I didn't find the right solution from the Internet.
References
www.avforums.com/threads/some-questions-on-digihome-tv.2132885/
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