Sony invited Jack Douglass, owner of the "jacksfilms" YouTube channel, to the world premiere, because he praised it sarcastically.

On January 13, 2018, Saudi Arabia lifted a 35-year ban on movie theaters. This was the first movie publicly shown in the country. It played at a film festival in Jeddah, as a double feature with Captain Underpants: The First Epic Movie (2017).

Sony promoted the latter release of the trailer by hosting a press conference in Cannes the day before the 2017 Cannes Film Festival, which featured T.J. Miller parasailing in. Variety called the event "slightly awkward", and The Hollywood Reporter described it as "promotional ridiculousness".

According to T.J. Miller, this was the fastest produced animated movie in history.

This was the first feature-length animated movie nominated for Razzies for Worst Picture, Worst Director, and Worst Screenplay. It was also the first animated movie nominated for a Razzie for Worst screenwriting since The Hunchback of Notre Dame (1996), which was nominated for "Worst Written Film Grossing Over One Hundred Million Dollars" in 1997. Eventually, this movie won all five Razzies for which it was nominated, including Worst Picture and Worst Director.

Jordan Peele was slated for the deleted role of Rugby Emoji.

Film critic Chris Stuckmann named this movie the "Worst Movie of 2017".

Alan Tudyk was slated for the deleted role of Dog Emoji.

This movie was shown alongside Puppy!: A Hotel Transylvania Short (2017).

In the Latin American Spanish version, the name of Jailbreak was changed to "Lady Hacker".

A week before this movie was released, Sony tweeted a controversial promotional picture parodying the Hulu series The Handmaid's Tale (2017). It was immediately met with criticism for being tasteless, considering the content and themes of the Hulu series. Following the backlash, the tweet was deleted.

The original title was "Emojimovie: Express Yourself."

This is Sony Animation's 14th theatrical film.

Cody Cameron was slated for the deleted role of Pretzel Emoji.

Credited as additional voices experienced voice actresses Debi Derryberry and Tara Strong have previously worked together in the Jimmy/Timmy Power Hour trilogy, additionally Patrick Stewart (Poop) also collaborated with Derryberry in Jimmy Neutron Boy Genius (2001).

As the phone began deleting, Poop shouted "Red alert". This is an obvious nod to Patrick Stewart's role as Captain Picard on Star Trek: The Next Generation and his frequent saying "red alert" when there is an emergency.

Ilana Glazer was originally set to play Jailbreak.

The plot for this movie is similar to the same plot for Wreck it Ralph (2012).

Maya Rudolph's second Sony Animation film after The Angry Birds Movie (2016).

This was Steve Wright's second animated movie, after The Swan Princess (1994).

Alicyn Packard's first voice over-role in an animated film that is not dubbed work.

Mona Marshall and Alicyn Packard who were listed under additional voices have also been known for voicing cat characters in Japanese anime such as Doraemon (2005) as the titular character and Yo Kai Watch (2015) as Jibanyan coincidentally both those shows featured Johnny Yong Bosch who voiced the protagonists of those shows.

The second theatrically released animated film to be composed by Patrick Doyle after Brave (2012).

Sony Animation's sixth fully animated film to be accompanied by a short film after Surf's Up (2007), Cloudy with a Chance of Meatballs (2009), Arthur Christmas (2011), Cloudy with a Chance of Meatballs 2 (2013), and Hotel Transylvania 2 (2015).

This was Sean Hayes' third voice role in a full-length animated film. His previous roles were in Igor (2008) and Monsters University (2013). All but one of these films featured Rob Riggle.

T.J. Miller and Maya Rudolph appeared in Big Hero 6 (2014).

This was Maya Rudolph's second Sony Animation film, after The Angry Birds Movie (2016). Both of Rudolph's characters are calm women who try their best never to get angry. However, the only difference (other than Matilda being a bird) is that Smiler is a villain.

This was Sofía Vergara's second Sony Animation movie, after The Smurfs (2011).

Keegan Michael-Key was slated for the deleted role of Football Emoji.

This was Anna Faris' third Sony Animation movie. The others being the first two Cloud with a Chance of Meatballs films, where her character is also the love interest of the main protagonist.

T.J. Miller and Anna Faris were part of Yogi Bear (2010)'s live-action cast.

This was T.J. Miller's fifth animated movie, after the first two How to Train Your Dragon films, Big Hero 6 (2014), and Hell and Back (2015).

This was Maya Rudolph's second time in an animated movie where she played a villain, after Shrek the Third (2007).

Conrad Vernon's second animated Columbia Pictures movie, after Sausage Party (2016), and his second animated movie not from DreamWorks Animation. As well as his first one from Sony Animation.

Jennifer Coolidge's third theatrically released animated film after Robots (2005) and Igor (2008).

Credited as additional voices experienced voice actors Keith Ferguson and Fred Tatasciore have previously worked together in the video-game adaptions of the Madagascar film franchise filling in for Sacha Baron Cohen and Cedric the Entertainer as King Julien and Maurice.

While all credited as additional voices Elizabeth Daily, Tara Strong, and Phil LaMarr have all previously worked together in The Powerpuff Girls Movie (2002). Another additional voice experienced voice actor Carlos Alazraqui previously worked in Rocko's Modern Life (1993).

Out of all the cast members of the film, Carlos Alazraqui, Bill Farmer, Debi Derryberry, Tara Strong, Laraine Newman, Keith Ferguson, Fred Tatasciore, Danny Mann, Matthew Wood, Mona Marshall, Alicyn Packard, Eric Bauza, Kyle Hebert, Crispin Freeman, S. Scott Bullock, Patrick Sietz, Eileen Galindo, and Frank Welker are the only non-celebrity talents of the film.

Not counting follow-ups this is the seventh film to use character cameos (in this case with emoji, app, and other phone related character cameos), after Who Framed Roger Rabbit (1988) (cartoon character cameos), Toy Story (1995) (toy cameos), Shrek (2001) (fairy tale character cameos), Ice Age (2002) (prehistoric animal cameos), Wreck it Ralph (2012) (video game character cameos), and The Lego Movie (2014) (lego character cameos).