What you’ll be able to do

Your phone can screen calls for you, wait on hold, and take a message, all without you touching it. If your number gets a lot of spam, or you just hate the whole “who’s calling, why are they calling” dance, this is for you. By the end you’ll have unknown numbers screened automatically, a proper greeting written, and a way to check that it’s actually working rather than just hoping it is.

This isn’t a business phone system, though. If you’re running a business and want something more robust, I’ll point you toward that category too, but the meat of this guide is what’s already sitting on your phone, unused.

Before you start

Right, first thing: check what phone you’ve got, because the setup is different depending on whether you’re on a Pixel or an iPhone. Both have built-in AI call screening now, which is genuinely useful and doesn’t cost anything extra.

On Google Pixel phones, there’s a feature called Call Screen. When it’s on, the phone can answer unknown calls itself, ask the caller who they are and why they’re calling, and show you a live transcript so you can decide whether to pick up, let it keep talking, or send it to voicemail. There’s also Hold for Me, which waits on hold for you and lets you know when a real person finally answers.

On iPhone, recent versions of iOS have something similar called Call Screening, which asks unknown callers to say who they are and why they’re calling before your phone even rings properly. There’s also Hold Assist, which does the same job as Hold for Me on hold music, and Live Voicemail, which transcribes voicemails as they’re being left so you can read along and decide if you want to jump in.

Both platforms also try to flag likely spam calls before you even get to the screening stage. None of this is perfect, and I’ll come back to that later, but it’s a decent first line of defence.

What it doesn’t do: it won’t have a conversation on your behalf, it won’t make decisions for you, and it definitely shouldn’t be handing out your personal details to a stranger who rings up asking for them. It screens and transcribes. You still decide.

Get set up

For personal use, you don’t need to install anything. It’s already there, just switched off by default in most cases.

On a Pixel phone: open the Phone app, tap the three dots or settings icon, and look for Call Screen. Turn it on, and you can usually choose whether it screens all unknown numbers automatically or asks you each time. Hold for Me lives in the same settings area, usually under “Assistive features” or similar within the Phone app.

On an iPhone: go to Settings, then Phone, and look for Call Screening (sometimes shown as part of “Silence Unknown Callers” settings, depending on your iOS version). Turn it on for unknown numbers. Hold Assist and Live Voicemail are separate toggles nearby in the same Settings > Phone menu.

Exact menu wording shifts a bit between software versions, so if you can’t find it exactly where I’ve said, search your phone’s settings for “call screen” or “screening” and it should turn up.

If you’re doing this for a business rather than your own personal mobile, the built-in phone features aren’t really designed for that. There’s a whole category of AI receptionist services built for small businesses: answering calls, taking messages, even booking appointments, all handled by AI on your behalf. I’m not going to name specific vendors here because pricing and how they handle your customers’ data varies a lot, and that’s exactly the kind of thing you need to check yourself before signing up. Look at what happens to call recordings, whether transcripts are stored, and for how long, before you commit.

Try it yourself

Once screening is switched on, the main thing you can influence is the greeting, on the phones that let you customise it. This is the bit people skip, and then wonder why the screening feels a bit robotic or doesn’t quite ask what they need it to ask.

Here’s a simple greeting you could use if your phone allows a custom one:

Hi, you've reached [your name]. I can't take your call right now.
Please tell me who's calling and what it's about, and I'll get back to you as soon as I can.

If you want it to nudge people toward leaving more useful information:

Hi, this is [your name]'s phone. I'm not available at the moment.
Please leave your name, your number, and a short reason for calling,
and I'll call you back when I'm free.

And if you specifically want to filter out sales calls without being rude about it:

Hi, you've reached [your name]. If this is a sales or marketing call,
please leave your company name and I'll follow up if it's relevant.
For anything else, leave your name and a quick message.

Test it properly. Ask a friend to call your number from a phone that isn’t saved in your contacts, so it counts as unknown. Watch what happens: does the screening kick in, does the transcript appear in something close to real time, and does it actually capture what they said accurately? Try it a couple of times with different sentences, some fast talkers, some mumblers, because that’s where you’ll see the gaps.

Check the result

Don’t just trust that it’s working. Run a few actual tests.

First, call yourself from a different phone (a friend’s, a landline, whatever you’ve got) and see if screening triggers at all. If it doesn’t, check your settings again, because it’s easy to have it half-configured.

Second, read the transcript back against what was actually said. Small errors are normal, especially with accents, background noise, or fast speech, but if it’s consistently getting names or numbers wrong, that’s worth knowing before you rely on it for anything important.

Third, check whether known spam numbers actually get flagged. This one’s harder to test on demand since you can’t exactly summon a scam call, but keep an eye on your call log over a week or two and see how the “likely spam” labelling matches your own judgement.

Fourth, if you’ve set up Hold for Me or Hold Assist, try it on a call where you genuinely expect to be on hold for a while, like a bank or utility company. Confirm it actually notifies you when a person picks up, rather than leaving you sat there listening to hold music the whole time anyway.

If it doesn’t work

Sometimes a call gets through when it shouldn’t, or screening doesn’t trigger at all. Usually it’s one of a few things: the number was already saved in your contacts (so it’s not treated as “unknown”), the setting got turned off in an update, or you’re on a call type the feature doesn’t cover, like some group calls or calls routed through certain apps rather than your standard phone line.

Here’s the important bit, though: never let call screening or any AI feature hand out your personal details, like your address, date of birth, financial information, or anything a scammer could use, even if the caller claims to need it. If a “greeting” prompt you’ve written asks the AI to share specifics like this, don’t. Keep the greeting to a name, a reason for calling, and nothing more sensitive than that.

And a genuinely important warning: emergency calls and anything medical need to reach an actual person. Don’t rely on screening for these. If you’re expecting a call from a doctor, a hospital, a school in an emergency, or anything time sensitive, either save that number in advance so it bypasses screening, or make sure you’re checking missed-call transcripts regularly, because screening can and does block legitimate calls sometimes. It’s not smart enough to know a call matters more than usual. Check your voicemail and transcripts properly, don’t just glance at the notification.

Keep exploring

If you liked getting your phone to take some of the calling admin off your plate, there’s more of this kind of thing worth setting up. Have a look at “How to get AI to handle my emails” if your inbox is in the same state your phone used to be in. “How to get AI to talk to me out loud” covers voice assistants that read things back to you, which pairs nicely with all this call screening. And “How to get AI to automate repetitive tasks” is the wider version of everything in this guide, for the other bits of your day you’d rather hand off.

Sources and review notes

Review date: 15 September 2026 — every source above was opened and checked against the text on that date.