Invented apps on screen: how film and TV build the phone UI you never see in stores
A pager number that rang real strangers, brand rules that shut out most plots, numbers and domains set aside for fiction, screen design for a two-second glance, live versus post playback, and a safe way to show a crypto wallet in a scene.
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The pager number that rang for real
CBC Radio told the story of a 2003 comedy that put a pager number on screen without an area code. Viewers across North America dialled it hoping to reach God, the people who truly owned that number picked up the calls, and for the DVD release the number was changed to 555-0123. Every invented phone screen has the same weakness: details that look like data may belong to someone. Handling that risk is a big part of the job known as screen graphics or playback, and it is why the apps you see on film phones are almost never real ones.
The reasons come in three layers. Brands tend to refuse the scenes drama needs most. Real interfaces carry real numbers, handles and addresses. And an invented screen can be drawn to be read on camera. What gets made is played live on the prop phone or added afterwards in post.
Contact details that belong to nobody
- United States and Canada. NANPA, the numbering administrator, reserves the non-working range 555-0100 through 555-0199 for entertainment and advertising. Other 555 numbers returned to the pool in 2016, so they no longer carry that guarantee.
- Australia. The ACMA publishes landline ranges, mobile numbers and 1800 numbers kept for TV, film and creative works, none of which connect to a person or a business.
- Websites and email. RFC 2606 sets aside the names .test, .example, .invalid and .localhost, while IANA keeps example.com and example.org for illustration. Mail sent to example.com goes nowhere.
- Usernames. Invent them, then search each on the real platform before the shoot. Fake social media for a production follows the phone number rule: if the account exists, choose another.
The same hygiene governs text story videos, which are built out of precisely these details.
What the brands themselves say
Large platforms publish film and TV rules. Put side by side they read like a case for drawing your own app.
| Topic | Meta | |
|---|---|---|
| Do you need approval? | Generally yes for the brand in entertainment; a spoken mention needs none if it implies no endorsement. | Film and TV scripts are on its list of uses to submit, with script pages and a mock-up of the asset. |
| What gets refused | Negative uses. Its examples include a villain using Search for dark purposes and robbers planning with Maps. Products shown failing are out as well. | Logos or technology tied to drugs, violence, illegal acts and similar themes. |
| Look of the interface | Current version only, with no invented features and no change to appearance. | Elements must match the latest version. |
| Third-party material | It cannot license other people's content seen in its products, so fiction should substitute its own. | Showing someone else's handle or account needs that person's approval. |
Neither company is being unreasonable; they are protecting a product from being shown in ways its owner cannot control. The practical effect is the same for a writer, though. For a thriller that closes off the stalker, the scam, the heist and the app that fails at the worst moment. Meta says it weighs who uses its technology and how.
WePresent's 2023 piece on fictional interfaces adds that screens are sometimes invented for copyright reasons and notes a made-up search engine seen in a huge number of films. Even when a real product appears, its owner stays close: on one streaming comedy, the phone maker reviewed the show's graphics, a social network approved each of its screens before shooting, and the production designer said the maker was insistent that swiping and typing on phones be accurate.
Drawing a screen for a two-second glance
A real app serves its user. A screen graphic serves a viewer who sees it briefly, from a distance and sometimes out of focus. That changes how you build it.
- One thing to read per screen. The message, the figure that changes, the alert. Everything else recedes.
- Large type, few elements. The comedy's production designer said text had to be easy to read off a phone on screen.
- Believable, not borrowed. It should feel like something the character would own without lifting a real app's logo, colours or layout. A close lookalike is a clearance question for the production, asked before design starts.
- List the states. Before, during, after, error. A scene in which a balance falls needs both figures, and a close-up may need a third.
- Lock anything that drifts. Clocks, battery icons and live data differ between takes. Freeze them in the build, not on the day. Camera-side fixes are in filming a phone screen without flicker or moire.
Live on the prop, or swapped in post
| Question | Live playback | Post replacement |
|---|---|---|
| What the actor reacts to | The finished graphic, tappable | A stand-in, or a dark or green screen |
| What the lens captures | Final image, light on the hands, true reflections | A plate to track and composite |
| Late changes | Costly, often a reshoot | Cheap: replace the graphic |
| Where the work lands | Before the shoot day | After it, shot by shot |
Veterans prefer live when feasible. A playback coordinator interviewed by Pushing Pixels in 2018 said his team likes to work live on set as far as possible, building interactive phone screens in everyday presentation software and driving them from a second phone off camera. A screen graphics designer in the same publication in 2014 explained that even replaced screens carry graphics so the performer is not reacting to a big green square.
On a small shoot, live simply means the right screen running on the actor's phone: a prop device app, a custom build from a playback specialist, or a web app opened full screen. If you have to composite anyway, putting an app on a phone screen: live, overlay, tracked or keyed weighs the routes for one phone.
When the scene is about money on a blockchain
Crypto scenes revolve around a few moments: checking a balance, a transfer that clears or fails, a wallet emptied by a scam, a sudden windfall. Each puts a wallet on screen, and each collides with all of the rules above.
A real wallet app is a brand that has not approved your scene, and scams, thefts and ransoms are what brand guidelines refuse. A real wallet also displays an address, and Bitcoin.org's privacy page says anyone can see the balance and transactions of any address. Copy one from a block explorer into a heist scene and curious viewers can look it up, the crypto version of the pager number. And a wallet that really holds the balance the script needs means real money on set.
The answer follows from everything above: build the screen for the scene. A crypto wallet app simulator, also called a larp wallet, shows a believable wallet screen from balances you type. It holds nothing and reads no chain. The larp wallet guide explains the term.
It behaves like any playback asset. Compose the states, open it on the phone in the shot, and let the actor tap through. Use a wallet name invented for the story, amounts typed for the script and no real person's address. If the production wants a resemblance to a specific real wallet, that is a clearance matter, not a design one. For cash in the same scene, see prop money for videos.
Where the line is
An invented app is honest inside a film because the audience knows it is a film. Lift that screen out of the story and it becomes a different object. A wallet mockup is a prop; every figure on it was typed, so it proves nothing about anyone's money. Showing it as real holdings, proof of funds or a record of gains is a deception, and our terms of use forbid it.
Flexdger Wallet is one such tool. You set the wallet name, tokens and amounts, the built-in tokens follow live market prices, and the screen opens full size on the prop phone. Treat it as you would any playback asset and lock the states before shoot day.
Flexdger Wallet is not affiliated with Google, Meta or any app named here. Their names appear only to describe their rules and tools.
Sources
- Google Brand Resource Center, Using Google branding in TV, film, and video, read 2026
- Meta Brand Resource Center, My Requests, read 2026
- WePresent, fictional UI for TV and film, 2023
- NANPA, 555 Line Numbers, read 2026
- ACMA, Phone numbers for TV shows, films and creative works, read 2026
- IETF, RFC 2606: Reserved Top Level DNS Names, 1999
- IANA, Example Domains, revised 2026
- CBC Radio, Why Hollywood uses 555 phone numbers, 2021
- Pushing Pixels, Screen graphics interview with Todd A. Marks, 2018
- Pushing Pixels, Screen graphics and movie user interfaces (interview), 2014
- Bitcoin.org, Protect your privacy, read 2026
Questions
What do you call the team that makes a phone screen for a film?
Screen graphics or playback, depending on the production. Designers build fictional interfaces with made-up names, logos and data, and a playback operator runs them on the prop device or hands them to the post team.
Is it legal to show a real app in a movie?
That depends on the brand's rules and on what the scene does with it, so productions ask first. Google says approval is generally required for its brand in entertainment, and Meta asks for script pages and a mock-up. Both decline scenes that link their products to crime or other negative uses.
Which phone numbers are safe to show on screen?
In the US and Canada, 555-0100 to 555-0199, set aside by NANPA for entertainment and advertising. Australia's ACMA lists landline, mobile and 1800 numbers that belong to nobody. For domains, example.com works, and the .test and .example names are reserved too.
Why does a film phone often look slightly unreal?
Because the screen is designed for a quick glance from a distance, with fewer elements and larger type than a real app uses. It is meant to be read on camera, not used.
Is it better to film the screen live or replace it later?
Live gives the actor something real to tap and puts true glow and reflections in the shot, though changes may mean a reshoot. A replacement stays editable but costs tracking and compositing on every shot.
How can a crypto wallet appear in a scene without a real wallet?
Use a screen built for the scene: an invented wallet name, amounts typed for the script and no real address. A crypto wallet app simulator can run it on the actor's phone, and anything that resembles a real wallet app should be cleared with the production.