How do you get the general public to update to the lates version of iOS?

Easy:

Hundreds of new emoji, including more emotive smiley faces, gender-neutral characters, clothing options, food types, animals, mythical creatures and more, are coming to iPhone and iPad with iOS 11.1. – Apple Newsroom

So in the next update to iOS, you’ll find mermaids, wizards, hedgehogs, giraffes, vampires, brocolli, and some more!