Can Make Calls but Can’t Receive Them? Here’s What to Check

Being able to call everyone while nobody can call you back is one of the stranger mobile faults.

It also gives us a useful clue.

If outgoing calls work, your SIM is at least connecting to the mobile network and your basic voice service is functioning in one direction.

That makes an incoming-call routing or handset-filtering problem more likely than a total loss of mobile service.

Start by checking call forwarding, Do Not Disturb or Focus modes, blocked numbers and unknown-caller filtering. If those are normal, look at recent number porting, SIM provisioning and provider-side incoming-call routing.

Why Would Calls Work in Only One Direction?

A normal phone conversation looks simple.

You tap a number.

Someone’s phone rings.

Behind the scenes, several systems are involved.

When you make an outgoing call, your network processes a request from your SIM.

When somebody calls you, their network must identify where your mobile number currently belongs and route the call towards your network and SIM.

Those are not exactly the same process.

So this can happen:

Outgoing call: fine.

Incoming call: fails.

It feels impossible.

Technically, it isn’t.

First Test More Than One Caller

Do not diagnose the network using one person’s phone.

Ask at least two or three people to call you if possible.

Ideally test:

• a saved contact
• an unsaved number
• someone on another mobile network

This gives you useful patterns.

One person cannot reach you

Likely:

• blocked number
• caller-specific filtering
• issue on their network

Unsaved numbers fail

Likely:

• unknown-caller filtering
• spam screening

Nobody can reach you

Likely:

• call forwarding
• incoming routing
• porting
• account/SIM issue

Patterns matter.

Check Your Recent Call Log

When somebody says they called you, look at the Phone app.

Do you see:

• a missed call?
• nothing at all?
• a voicemail?
• a spam-filter entry?

These mean different things.

Missed call appears

The network probably delivered the call to your device, but it did not alert you normally.

Think:

• silent mode
• Focus
• notification/ringtone settings

Nothing appears

The call may not have reached the handset at all.

Think:

• forwarding
• network routing
• number port
• provider issue

Straight to voicemail

Think:

• unreachable state
• Focus/filtering
• forwarding
• weak coverage
• line-registration issue

Check Focus or Do Not Disturb

You can accidentally create a setup where outgoing calls work perfectly while incoming calls are silently suppressed.

Android allows Do Not Disturb modes to restrict calls from selected groups or people.

Apple also advises checking Focus settings when incoming calls fail to ring.

Turn all automated modes off temporarily.

That includes:

• Sleep
• Work
• Driving
• Do Not Disturb
• custom routines

Then retest.

Check Blocked Numbers

If the problem affects one or two specific callers, this is the obvious next step.

On iPhone:

Settings → Apps → Phone → Blocked Contacts

Apple includes this check in its official call troubleshooting process.

Android locations vary, but the blocked list is normally accessible through your Phone app settings.

Don’t overlook third-party spam apps either.

They can sometimes filter calls before the normal dialler gets involved.

Check Unknown-Caller Filtering

An iPhone can be configured to silence or filter unknown callers.

If family members ring fine but:

• delivery drivers
• doctors
• recruitment agencies
• businesses

never seem to get through, test this setting.

Apple’s current call guidance specifically recommends checking unknown-caller controls when troubleshooting this symptom.

Check Call Forwarding

Outgoing calls can remain completely normal while incoming calls are being redirected elsewhere.

That is exactly what call forwarding is designed to do.

On supported iPhones:

Settings → Apps → Phone → Call Forwarding

Apple explains that call forwarding can redirect incoming calls to another number.

Provider-level conditional forwarding can also redirect calls when:

• busy
• unanswered
• unreachable

If you previously experimented with voicemail or call diversion, check it.

Recently Switched Networks?

This is one of the most important questions.

If you recently transferred your existing mobile number to a new network and outgoing calls work but incoming calls fail, tell the provider immediately.

Number porting changes the routing destination for your phone number.

Most transfers complete smoothly.

Occasionally a routing issue can affect particular services or callers.

Useful symptoms to report include:

• old SIM stopped working
• new SIM can call out
• calls to your old number fail
• temporary new number works
• incoming SMS and calls behave differently

The more specific you are, the faster the provider can investigate the correct layer.

Why Number Porting Can Produce Strange Symptoms

Imagine your number originally belonged to Network A.

You move to Network B.

Other telecom networks now need to know:

Calls for this number should go to Network B.

If some routing data has not updated correctly, outgoing calling can still work because your new SIM is already registered on Network B.

Incoming calls, however, depend on other networks routing your number correctly.

That’s why porting-related faults can look so one-sided.

Toggle Aeroplane Mode

Switch Aeroplane Mode on.

Wait a few seconds.

Turn it off.

This disconnects and reconnects your mobile service.

Apple recommends this as a call troubleshooting step.

Then ask someone to call again.

Restart the Phone

A proper restart is different from simply locking the screen.

It refreshes:

• the modem
• network registration
• SIM services
• Phone app processes
• VoLTE registration

Small software problems do occasionally resolve this way.

And it costs nothing.

Check the Correct SIM on Dual-SIM Phones

Dual-SIM phones introduce another layer.

You may have:

• a physical SIM
• an eSIM
• two active numbers
• one line disabled

Make sure the line people are calling is actually switched on.

On iPhone, Apple advises checking that the relevant line is enabled when troubleshooting cellular messaging; the same basic dual-line check is useful when investigating mobile service problems generally.

Also check which line is set as your preferred voice service.

Test With Wi-Fi Calling

If the issue happens mainly indoors, test Wi-Fi Calling where your provider supports it.

Ofcom notes that building materials can reduce indoor coverage and recommends Wi-Fi Calling as one option for improving call connectivity.

Talk Home Mobile offers Wi-Fi Calling and VoLTE on compatible devices.

If incoming calls suddenly become reliable over Wi-Fi Calling, local indoor radio coverage may be part of the problem.

Check VoLTE

The UK’s 3G networks are now switched off, meaning 4G voice capability is increasingly important.

A modern handset generally uses VoLTE for 4G voice where supported.

Talk Home Mobile describes VoLTE as allowing a call to remain on 4G rather than falling back to older 2G or 3G technology.

If:

• 4G data works
• calls behave strangely
• the phone is older
• software has not been updated

check VoLTE compatibility and settings.

Try Your SIM in Another Phone

This is one of the strongest tests.

Incoming calls work in the second phone

Your original phone or its configuration is likely involved.

Incoming calls still fail

The line, SIM or network configuration becomes the stronger suspect.

Don’t skip this step if you have access to a spare unlocked handset.

It can separate hardware from network issues in five minutes.

What If Callers Hear Different Messages?

Ask what happens when people call.

Do they hear:

Normal ringing forever

Your phone may not be alerting you properly.

Immediate voicemail

Think forwarding, unreachable status, Focus or network registration.

“Number not recognised”

Think provisioning or number-porting issue.

Busy tone

Think call barring, forwarding or another line state.

Call disconnects immediately

Network routing deserves investigation.

The caller’s experience can reveal more than your signal bars.

What If Some Networks Can Call You but Others Can’t?

That strongly points away from your handset.

If callers from Network A reach you but Network B cannot, provider-level routing deserves attention.

Report:

• which callers succeed
• which networks fail
• whether the number was recently ported
• when the issue started

That gives technical support something concrete to investigate.

A User Story

Sam switches mobile networks on Tuesday.

His old number moves across.

By Wednesday, he can:

• browse
• send messages
• make calls

Everything looks good.

Then his office tells him nobody can reach him.

His wife tries.

Straight to an error.

His colleague on another network gets the same thing.

Instead of resetting the entire phone, Sam asks himself:

What changed immediately before the fault started?

The answer is obvious.

The number port.

That doesn’t prove the port is broken.

But it gives the provider a highly relevant lead.

Good troubleshooting is often less about knowing every technical system and more about noticing timing.

Talk Home Mobile and Incoming Calling

Talk Home Mobile currently supports modern voice features including VoLTE and Wi-Fi Calling on compatible handsets.

If outgoing Talk Home calls work but incoming calls consistently fail:

• check phone filtering first
• check forwarding
• restart/re-register
• test another handset
• mention any recent number transfer

If the issue follows the SIM into another handset, support should investigate the account/network side.

Don’t Factory Reset Your Phone Yet

Please don’t jump straight to the nuclear option.

A factory reset can erase data and create hours of unnecessary setup.

It is rarely the first sensible response to a one-way incoming-call problem.

Start with targeted checks.

There is no point deleting 4,000 holiday photos because someone accidentally turned on call forwarding.

A Better Troubleshooting Order

Use this sequence:

1. Test multiple callers.
2. Check the call log.
3. Turn off Focus/Do Not Disturb.
4. Check blocked numbers.
5. Disable unknown-caller filtering.
6. Check call forwarding.
7. Toggle Aeroplane Mode.
8. Restart.
9. Test another location.
10. Test another handset.
11. Contact the provider if it continues.

That order moves from low-risk, high-probability causes to network-level investigation.

Incoming Calls Shouldn’t Be a Guessing Game

If you can make calls but cannot receive them, your phone is giving you an unusually useful clue.

The whole service is not necessarily down.

Something is probably affecting the incoming direction specifically.

Start with filters and forwarding.

Then consider recent number porting.

Then test the SIM separately from the phone.

Within a few checks, you can normally tell whether the problem lives in your handset or somewhere further inside the network.