How to Record Any Audio as Your Voicemail Greeting | The Speaker Method

Quick answer — can you use an MP3 as a voicemail greeting?

There's no official way to upload an audio file directly to a mobile voicemail system on the major UK networks. EE, O2, Vodafone and Three all require you to record your greeting through their system: there's no file upload button.

But there is a workaround. It's low-tech, it requires no software, and it works on any phone. It involves playing the audio you want through speakers and recording it live into your voicemail system. This page walks you through exactly how to do it.

What You'll Need

A computer, laptop, or any device that can play audio through speakers

Your phone (iPhone or Android — this method works on both)

The audio file you want to use (MP3, WAV, M4A — any playback format works)

A reasonably quiet room

A pair of closed-back headphones held around the phone's microphone instead of speakers can improve the result: it cuts out room noise and reduces the chance of echo. It looks odd but it works. Ok, for those DIYer's (we all like to have a go right?) get ready to be blown away

Step-by-Step | The Speaker Method

Step One Find your audio file and open it in a media player on your computer. Don't play it yet: get it ready at the beginning of the track. It might be part of a song, a clip from a film or the audio from a ridiculous video about the mating call of the bird of paradise. (If you want to record your own but want a better quality piece of audio, check out the Rode VideoMic Me-C (review here) which plugs straight into your phone and turns average audio, to VERY GOOD audio).

Step Two

Turn your speakers on and turn them to somewhere between medium and high. (You can also use headphones if they're a decent closed back set). Too loud causes distortion; too quiet and the phone won't pick it up clearly.

Step Three

On your phone, call your voicemail. Dial 150 (EE), 901 (O2), 121 (Vodafone) or 123 (Three) depending on your network.

Step Four Navigate through the voicemail menu to 'change greeting' or 'record greeting'. The exact wording varies by network, but it's usually one or two presses from the main menu. At the point where you would usually start talking to record a greeting, hold the mouth end of the phone a few inches away from one of your speakers. (Or tightly hold your closed back headphones around the mouthpiece of your phone.)

Step Five

When the system prompts you to start recording, hold your phone's microphone end close to one of your speakers: roughly ten to fifteen centimetres away.

Step Six

Immediately press play on the audio file on your computer.

Step Seven

When the audio finishes, end the recording on your phone — usually by pressing # or following the prompt.

Step Eight

Listen back to the greeting. If it sounds distorted, lower the speaker volume and try again. If it sounds too quiet, bring the phone slightly closer to the speaker.

And that's all there is to it.

Please note:

The recording will not sound as clean as the original file. The telephone system compresses audio significantly and this is unavoidable with any consumer voicemail system. The goal is to get the clearest possible version of your audio through that constraint, not a perfect reproduction.

Android Users — Carrier-Specific Setup

Network	Voicemail Number	Notes
EE	150	Press 2 from the main menu to access greeting options
02	901	Follow prompts: 'change greeting' is in personal options
Vodafone	121	Press 3 for greeting options from the main menu
Three	123	Follow the automated prompts to reach greeting recording
Spusu	333	This is done by the SPUSU app

For a full carrier-by-carrier Android guide including visual voicemail setup, MVNO networks (like SKY, giffgaff, BT Mobile and Tesco) plus troubleshootng: see the Android voicemail greeting guide for UK Networks.

When the Speaker Method Isn't Quite Good Enough

The speaker method works, but it introduces an additional generation of quality loss. Your audio goes from the original file to speakers, from speakers into a phone microphone, and then through the carrier's own compression. That's three stages before your caller hears anything.

If audio quality matters, particularly for business use, there are two better options:

• The iPhone conversion method: convert your audio file to the correct format and route it more directly. See the full iPhone voicemail audio conversion guide.

• A professionally recorded greeting: recorded in a treated acoustic space, delivered in the right format, and engineered to survive telephone compression as cleanly as possible.If you've got some decent closed back headphones, you can can put you're phone in-between both ear pieces. This helps to eliminate room noise and potential reverb caused by the speakers.

OR

Professional Message (recommended)

Get me to do it for you from the quiet of my sound proof booth! My name is Martin Whiskin and I am a voiceover artist based in Kent! Read some of my other Blog posts like "So you want a voiceover for free?" or one of my more recent posts like "Best books to read for business".

Of course, it doesn't have to be a sample from a film or your favourite music. It could be one of the pre-recorded voicemail greetings available in my shop! Or a totally bespoke answer message tailored to your needs.

And while you're here, take a listen to some examples of telephone messages to listen to my sound and accent...

EDIT FOR 2026 I've been wondering about celebrity voicemails. Not those rubbish impressions you can get to put on your phone, but like Morgan Freeman's voicemail. Do you think he records his own? Does he leave it as the robot voice of the provider? Imagine the disappointment if you got through to his answer phone and it wasn't his incredible voice on there!

Speaking of Morgan Freeman, here's a post that mentions his voice role in The Shawshank Redemption and why narration in films is so effective.

Did you also know that as a voiceover artist that I also provide a Kinetic Typography Video service plus ... drum roll ... voiceover for Animated Explainer videos!

If you have questions about voiceover or engaging the services of one, head over to my FAQs page!

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