I vaguely recall this was widely panned, critically and in ticket sales, when it was released. So with that kind of expectation going in, and I was happy to find that it's actually a pretty decent movie.
It does tries a tad too hard on some of the emoji jokes, such that some fall flat, but there are plenty which do land.
I would have given it four stars - being what the movie itself is worth - but for the very mediocre UHD blu-ray quality. 3D animated movies - when mastered well - are exemplars for UHD blu-rays. This one is not done well. There's no Dolby Vision support, so you're stuck with 10-bit colour, and posterisation is rampant. This is particularly problematic when the main character is a yellow sphere - rendered uglified with bands of flat yellow shades, rather than smooth gradients.