Extra protection from someone you trust
Who’s Calling screens calls from numbers you don’t know. Guardian lets someone you trust get an alert when one of those calls comes in – so if a scammer rings, you’re not dealing with it alone.
- Unknown callers are screened before they reach you
- Your Guardian gets the caller’s number and transcribed screening message
- One tap for them to call you and check you’re OK
- Nothing is shared until you choose a Guardian and they accept
Exactly what happens when an unknown number calls
Calls from people in your contacts ring straight through as normal. Calls from numbers you don’t know are screened first – and with Guardian switched on, someone you trust hears about it too.
An unknown number calls
Someone who isn’t in your contacts rings your phone.
Who’s Calling screens it
The caller is asked who they are and why they’re calling, so you know before you ever speak to them.
Your Guardian gets an alert
Your Guardian sees that a call was screened, when it happened, the caller’s number and a transcription of what the caller said during screening.
They check in with you
One tap and they’re ringing you to make sure you were expecting it – before any harm is done.
Protect yourself, or someone you love
Set up Guardian for yourself
Choose a son, daughter, partner or friend to be your Guardian. They’ll get an alert whenever Who’s Calling screens one of your calls.
See the steps →Protect someone else
Worried about Mum or Dad? Send them a request from your own phone. They must approve it before you receive any Guardian alerts – they stay in charge.
See the steps →Setting up Guardian
See how Guardian works in the Who’s Calling app. Setup only takes a couple of minutes.
Open Guardian and tap “Set up Guardian”
In Who’s Calling, open Guardian. You’ll see what it does and a reminder that your normal call screening works whether Guardian is on or off.
Tap Set up Guardian.
Turn on Guardian
Before anything is switched on, the app explains exactly what Guardian means for you:
- Guardian alerts – your Guardian can receive alerts about your screened calls
- Private by design – they don’t see your contacts, messages or normal calls
- You stay in control – turn it off or remove a Guardian whenever you want
Tap Turn on Guardian.
Choose who you trust
Type in their UK mobile number, or pick them from your contacts. Then tap Continue.
Confirm and send the invitation
Check the name and number are right, then tap Send invitation. Their status shows as Invite pending until they respond.
Your Guardian accepts
Your Guardian gets the invitation, sees exactly what they will and won’t be able to see, and taps Accept invitation.
You’re protected
Guardian alerts shows ON, and your Guardian shows as Active. You can add up to five Guardians, see the people you protect, or switch Guardian off at any time.
Choose who you’d like to protect
Open Guardian and tap Protect someone else. Enter their mobile number or choose them from your contacts, then tap Send request.
Request sent
That’s your part done. Nothing is shared unless they accept.
They decide
They see who wants to be their Guardian, with the name and number, and exactly what that means. They tap Accept or Decline – it’s entirely their choice.
Once they accept, they appear under People I protect on your phone.
What your Guardian sees
Short, clear and only what’s needed to check you’re OK.
A Guardian alert
Your Guardian sees that Who’s Calling screened a call, the time it came in, the caller’s number and a transcription of what the caller said during screening.
That gives them useful context straight away — for example, whether the caller claimed to be from a bank, asked for money or tried to create urgency.
If they’re worried, they tap Call Mum and check she was expecting it. That quick phone call is often all it takes to stop a scam in its tracks.
Alert history
Every alert is kept in one list for each person you protect, with a short transcript preview, so it’s easy to spot a number that keeps trying and quickly remember what they said.
The benefits at a glance
Scammers don’t catch you off guard
Unknown callers are screened first, so you’re never put on the spot by a convincing voice.
Nobody faces a scammer alone
Someone you trust hears about screened calls and can check in before any money is lost.
One tap to check in
Every alert has a Call button, so your Guardian can ring you straight away.
Private by design
Guardians never see your contacts, your messages or your normal calls.
You stay in control
Turn Guardian off, or remove a Guardian, whenever you want. Nothing is shared without consent.
Your contacts ring as normal
Family and friends come straight through. Guardian only covers calls Who’s Calling screens.
Look after Mum and Dad remotely
Start from your own phone, wherever you are. They just tap Accept.
Built-in trust check
Every invitation reminds people to only accept someone they know and trust.
Free for Guardians
The people you invite receive their Guardian alerts at no cost.
What a Guardian can and can’t see
Guardian is built around consent. The person being protected is always in charge.
Your Guardian sees
- That Who’s Calling screened a call to you
- The date and time of the call
- The caller’s number
- A transcription of what the unknown caller said during screening
Your Guardian never sees
- Your contacts
- Your messages
- Your normal calls from people you know
Frequently asked questions
Does Guardian stop calls from my family and friends?
No. Anyone in your contacts rings straight through as normal. Guardian alerts are only about calls Who’s Calling screens.
Can I set up Guardian for my mum or dad without being with them?
Yes. Tap Protect someone else and send them a request from your phone. Nothing is shared unless they accept it on their own phone.
What does my Guardian actually see?
That a call was screened, when it came in, the caller’s number and a transcription of what the unknown caller said during screening. They never see your contacts, your messages or your normal calls.
Can I turn Guardian off or remove a Guardian?
Yes, at any time. Your normal Who’s Calling call screening keeps working whether Guardian is on or off.
Can I have more than one Guardian?
Yes. You can have up to five Guardians and see each one’s status – Active or Invite pending.
Does it cost anything to be a Guardian?
No. Guardian alerts are free for the people you invite.
Which phones does it work on?
Who’s Calling is available for Android phones from Google Play.
Give the people you love an extra line of defence
Set up Guardian today – it only takes a couple of minutes.