Blog  ·  28 July 2026

Using AI where there is no signal

Every AI tool on your phone has the same failure mode, and it is not a bug in the model. It is the spinner that appears when the bars disappear.

The assumption baked into almost every AI product is that the network is always there. It usually is — until you are on a plane, in a tunnel, three valleys into a hike, in a hospital basement, or in a country where you decided against paying for roaming.

These are not edge cases. They are a meaningful slice of the time people have a spare twenty minutes and something they would like help with.

What still works with no connection

An assistant that runs on the phone keeps working, because there is nothing for it to reach. In practice that covers a surprising amount:

• Writing and rewriting. Drafting a message, tightening a paragraph, changing the tone of something you already wrote.
• Summarising. A document you saved earlier, a long email, your own notes.
• Extracting. Pulling dates, totals and names out of text and putting them in order.
• Explaining. Concepts, terminology, how something generally works.
• Thinking out loud. Brainstorming, listing options, arguing both sides of a decision.
• Translating the gist. Rough but often enough to act on.
• Turning a mess into a list. Voice notes, scribbles, a wall of text.

What does not work, and why

Being clear about this is more useful than overselling it:

• Anything about right now. News, prices, scores, live schedules. There is no connection, so there is no current information — and it will not always tell you that it does not know.
• Anything on the internet. It cannot open a link, search, or read a page you have not saved.
• Anything in another app's cloud. Your inbox, your calendar sync, your files that have not been downloaded.
• Frontier-level reasoning. An AI that fits on a phone is meaningfully less capable than a large cloud model on hard problems.

The single most important habit: treat factual claims about the world with suspicion, and treat work on text you supplied as reliable. That line predicts almost everything about where it will help and where it will let you down.

Preparing for a trip

Everything that has to be downloaded should be downloaded before you leave. That means:

1. Set the assistant up at home, on Wi-Fi. It cannot be installed without a connection, which is the one thing people discover at the gate.
2. Save the documents you might need into Files so they exist on the device rather than in a cloud folder.
3. Write down the questions you actually have. Not a technical step, but it is what turns dead time into finished work.

The two reasons people end up here

People arrive at offline AI from two different directions, and they want different things.

Connectivity. Flights, commutes, fieldwork, travel. The value is continuity: the tool does not stop working when the bars do.

Privacy. Work that cannot be uploaded. The value is that nothing is transmitted at all, which is a stronger guarantee than any policy — see what you shouldn't paste into a cloud chatbot.

The same property produces both. An assistant that does not need the network also cannot leak over it.

What you need

An iPhone or iPad on iOS 17 or later, and a few minutes of Wi-Fi once. Will it run on my iPhone? covers older devices.

Frequently asked questions

Last updated: 28 July 2026