Thanks for all of the responses. It's clear to me now that our new phablet won't support Calibra...but that's okay.
The reason that I like Calibra is that it's free but more importantly because you can highlight a word or string of words, right-click and then bring up a menu that lets you (among other things) Google it or get a Dictionary definition. We use this function all the time when we read.
As examples, say I'm reading a Harry Bosch novel (Michael Connelly) and Harry is going to meet someone at such-and-such eatery in Hollywood because they make the best chile dogs or what-ever. I can highlight the name of the eatery, right-click, Google it and more often then not, the 'location' is real so I get to see what it looks like in real life and also check out the menu!
Someone's driving a '62 Caddy El Dorado and I don't know what it looks like. No probs, I Google it.
When I'm not sure of what a word means, I look it up in the Dictionary - although Calibra uses the
1913 Websters dictionary for some unknown reason.
Someone lives on Mulholland Drive, I can check it out with Google Maps. Etc, etc.
Anyway, I found some Android apps with the functions we want and it looks at this stage that we'll opt for Moon+ Reader Pro.
Thanks again for the quality responses and Good Reading to all this Festive season

!
Cheers,
Chadwick