Can Investors Read Your Pitch Deck on a Phone?

Quick answer: Most investors give your deck less than four minutes on the first read, and many open it on a phone. To make it phone-friendly, use one idea per slide, write headlines that state the point, set body text at 24 pt or larger, and swap dense tables for one big number. Test every slide on a phone before sending.

I’m sure you’ve done this. You finish the deck. It looks great on your big monitor. You export the PDF and hit send.

Then the investor opens it on their phone, in a cab, between two meetings. Your market slide turns into a gray blur, and nobody can read your chart labels.

That’s a real problem, because you don’t get a second first read.

How do investors read a pitch deck today?

They read it fast. DocSend’s data shows investors spend about 3 minutes and 44 seconds on a deck the first time they open it. The team, financials, and traction slides get the most attention. (I wrote about how to design a pitch deck investors can read in 2 minutes if you want the full slide order.)

Some 2026 industry write-ups claim that over 70% of first reviews now happen on phones or tablets. I’d take that exact number with a grain of salt (nobody tracks this perfectly), but I’d still plan for it. A deck that works on a phone will also work on a laptop and a big screen. The reverse isn’t true.

Why do most decks fall apart on a small screen?

Most decks are built for a meeting room. Then they get sent as a PDF and read on a 6-inch screen. Here’s what usually breaks:

• Too much text, because the slide also works as speaker notes

• Chart labels and legends in 10 pt type

• Light gray text on a white background

• Tables with 12 months of data in tiny cells

• A logo wall with 40 customer logos the size of a fingernail

• Headlines like “Market Overview” that say nothing

On a phone, the reader has to pinch and zoom to get anything. Most won’t bother.

What does a phone-friendly slide look like?

Here are three common slides, before and after. (The numbers are made up, but you’ll get the idea.)

Example 1: The headline

• Bad: “Market Overview”

• Better: “Mid-size banks spend 30 hours a week on manual fraud checks”

The better version tells the investor what to think before they look at anything else. If they only read your headlines, they should still get your story.

Example 2: The traction slide

• Bad: A table with monthly revenue, churn, CAC, and LTV for the past year, all in small type

• Better: One big number, “$1.2M ARR, up 3x in 12 months,” with a simple line chart below it

Put the full table in your data room. The slide only needs the one number you want them to remember.

Example 3: The customer slide

• Bad: 40 logos in a tight grid

• Better: 6 logos the investor will know, shown large, with one line about how many customers you have in total

Fewer logos look stronger. A crowded grid makes every logo harder to see, including the best ones.

What rules should you follow when designing for a phone?

These are the rules I use and recommend:

• One idea per slide. If a slide needs two points, make two slides.

• Write headlines as full sentences that state your point.

• Keep body text at 24 pt or larger. Headlines should be 36 pt or larger.

• Use strong contrast. Dark text on a light background, or the other way around.

• Label chart lines directly and skip the legend.

• Keep your send deck to 10 to 15 slides.

• Cut any word the slide can live without.

None of this makes your deck look plain. Big type and clear space look confident.

How do you test your deck before you send it?

This takes five minutes:

1. Export the PDF and email it to yourself.

2. Open it on your phone. Don’t zoom.

3. Scroll through the whole deck in two minutes.

4. Read only the headlines. Do they tell your story from start to end?

5. Hand your phone to someone outside your industry. Ask them what your company does.

If they can’t answer that last one, the deck needs work, and it’s much better to find out now than after you’ve sent it to 50 investors.

Should you have a separate deck for sending and presenting?

Yes. I think every founder should have two.

Your presenting deck can be lighter, because you’re in the room to explain it. Your send deck has to stand on its own, with no one there to fill the gaps. That’s the one investors will open on a phone, so that’s the one to design for a small screen.

FAQ

What font size should I use in a pitch deck?

Use at least 24 pt for body text and 36 pt or more for headlines on a standard 16:9 slide. If you have to drop below 24 pt to fit everything in, the slide has too much on it.

Do I need a vertical version of my pitch deck for phones?

Most founders don’t. A standard 16:9 deck can read well on a phone if the text is big and each slide has one idea. Fix the content first. A vertical version is a nice extra if you have the time.

How many slides should a pitch deck have?

For a deck you send by email, aim for 10 to 15 slides. That gives investors the full story in the few minutes they’ll spend on a first read.

Not sure how your deck looks on a phone? Send it to me at hello@ashleycarre.com with the subject line “Phone check,” and I’ll tell you which slides are the hardest to read.

Want a deck that works on any screen? See my pitch deck design packages, starting at $797.