How to record a conference session on a phone

Most small and mid-size events don't record their sessions, and the reason is usually cost. A proper recording means a feed from the sound desk, a technician per room, and someone to edit afterwards. For a 200-person conference with three rooms, that budget isn't there.

You don't need it if the goal is a transcript, notes or takeaways rather than video for an on-demand library. A phone in the room is enough. In our own tests, a talk recorded on a phone from across a room produced takeaways almost as good as the same talk recorded from clean audio. (Details in We tested AI session takeaways on 10 real talks.)

This guide is for the organizer or volunteer doing it.

What you need

• One phone per room, charged, with a few gigabytes free. Speech audio is small, typically well under a gigabyte for a full day.
• A stand or a stable spot. A cheap tabletop tripod helps; a lectern shelf or the front table works too.
• A charging cable that reaches, or a small power bank for long blocks.
• Do Not Disturb turned on. A call can interrupt some recorders.

That's it. You don't need an external microphone, although a clip-on mic for the speaker does improve quality if you have one.

Where to put the phone

Distance matters far more than the phone model. A mid-range phone a metre from the speaker beats an expensive one at the back of the room.

Room setup	Where the phone goes	Watch out for
Speaker at a lectern	On or beside the lectern, mic end toward the speaker	Paper shuffling and tapping on the lectern
Speaker who walks the stage	Front row seat or front table, centred	They'll be quieter at the edges; fine for transcripts
Panel at a table	Middle of the table, flat	Water glasses, mics being handled
PA system in a big room	Near a PA speaker, not touching it	Too close and it distorts; a metre away is plenty
Audience Q&A	Leave it where it is	Questions from the floor may be faint unless there's a roaming mic

If the room has a PA, the speaker's voice coming out of it is often clearer than the speaker's voice direct. Putting the phone a metre in front of a PA speaker is a good trick for large rooms.

Do a ten-second test before the first session in each room: record, play it back, and listen for the speaker's voice over the room noise.

Ask the speakers first

Tell speakers in advance that sessions will be recorded and what the recording is for. Put it in the speaker confirmation email, not on a slide on the day. Most speakers say yes when they know the purpose is notes and takeaways for attendees rather than a video posted publicly.

Two practical points:

• Mention it at the start of the session too. The moderator can say one line: “We're recording audio for the session notes.” That covers the audience as well.
• Recording laws differ. In some US states and many countries, recording a conversation needs everyone's consent. A public talk at a conference with a clear notice is usually treated differently from a private meeting, but check your local rules if you're unsure. This guide isn't legal advice.

What goes wrong, and the fix

The recording stopped halfway. Usually a phone call, a low battery, or someone tapping the screen. Use Do Not Disturb, keep the phone plugged in, and lock the screen once it's recording if your app allows it.

The speaker is faint and the room is loud. The phone is too far away, or next to the coffee urn, the air conditioning or the door. Move it closer to the speaker or a PA speaker.

The panel is a blur of voices. Normal. Transcription handles overlapping speech badly. It helps if the moderator says names (“Priya, what do you think?”), because the names then appear in the transcript and anyone writing takeaways can tell who said what.

Nobody pressed stop, and the recording ran through lunch. Common, and mostly harmless; trim it later. Better, give each room's volunteer a printed card with the session times.

The file disappeared. The phone was reset, or the volunteer took it home. Use an app that uploads during or right after the session rather than leaving files on the device.

The one-minute checklist

Print this and give it to each room volunteer.

1. Phone charged and plugged in, Do Not Disturb on.
2. Ten-second test recording, played back, speaker clearly audible.
3. Phone on the lectern, front table, or a metre in front of a PA speaker.
4. Moderator says: “We're recording audio for the session notes.”
5. Start recording before the speaker begins. Don't touch the phone during the talk.
6. Stop at the end of Q&A. Check the recording saved.
7. Same phone, same spot, for the next session.

Turning the recording into something people use

A recording nobody listens to is only a backup. The useful output is the transcript and, more than that, the few ideas people want to keep. You can write those by hand from the transcript, or use a tool that drafts them.

That's what Gemlo does with the phone in the room. A volunteer starts the session recording in the Gemlo app. The audio uploads in five-minute pieces while the talk is still going, so a dead battery at minute 40 doesn't lose the first 35, and the recording keeps going if the screen locks. When the session ends, takeaways are drafted from the transcript, each with the line it came from, and attendees get them on their phones, usually within a couple of minutes. You can review them first if you prefer. If a session wasn't recorded in the app, you can also paste a transcript or attach an audio file afterwards.

Whatever you use, the phone placement and the speaker conversation matter most. Get those right and the rest is easy.