Not Receiving SMS but Calls Work? Causes and Fixes

Your phone rings normally.

You can call people.

Mobile data is fine.

But somebody says:

“I texted you yesterday.”

You received absolutely nothing.

If calls work but SMS does not, your mobile line is clearly connecting to the network, but the messaging service or phone configuration needs separate attention.

Common causes include SMS provisioning problems, blocked or filtered senders, a recently changed phone, iMessage or RCS registration, dual-SIM settings, number porting or an issue affecting automated/short-code messages.

Start by finding out whether you are missing all SMS messages or only certain types.

That distinction saves a lot of time.

SMS Is Not the Same as WhatsApp, iMessage or RCS

This is the first thing to understand.

Your Messages app can contain several completely different technologies.

SMS

Traditional carrier text message.

MMS

Carrier multimedia messaging.

iMessage

Apple’s internet-based messaging system.

RCS

Modern internet-enabled messaging supported by compatible devices/providers.

Apple notes that iMessage travels over Wi-Fi or mobile data, while SMS, MMS and RCS depend on their respective supported messaging services.

Google likewise treats SMS/RCS support as separate parts of Messages troubleshooting.

So:

“Messages works”

does not necessarily mean:

“SMS works.”

First Test With a Real SMS

Ask someone to send a plain text.

Ideally use:

• a different phone platform
• a different mobile network
• no photo
• no group chat

For example, ask someone to send:

Test 123

If it arrives, basic SMS reception works.

Now investigate the specific sender that is failing.

If it does not, continue with broader SMS troubleshooting.

Can You Send SMS?

Try sending one yourself.

Can send and receive nothing

General SMS service issue.

Can send but cannot receive

Incoming SMS routing or filtering.

Cannot send but can receive

Outgoing SMS configuration/account issue.

Only automated texts fail

Short-code/OTP filtering or sender routing.

The direction matters.

Check Signal and Aeroplane Mode

Calls working makes a total loss of signal unlikely.

Still, force a clean network registration.

Turn Aeroplane Mode on.

Wait several seconds.

Turn it off.

Then test again.

A restart is also worthwhile.

Google advises checking signal and ensuring Aeroplane Mode is disabled when SMS fails.

Check Blocked Numbers and Spam

If one person’s messages never appear:

• check blocked contacts
• check spam
• check archived messages
• search their number

Your phone may have silently moved the conversation.

Automated senders can be filtered too.

That becomes especially relevant if:

• personal SMS works
• OTPs do not
• delivery alerts do not
• appointment reminders do not

Did You Move From iPhone to Android?

This deserves an early check.

Google specifically advises users switching from iPhone to deactivate iMessage for their mobile number if they stop receiving texts correctly.

Why?

Because other Apple devices may still attempt to send messages through iMessage rather than ordinary SMS if the number remains registered.

Typical pattern:

• Android phone receives normal SMS
• texts from some iPhone users disappear
• senders still see blue-message behaviour

If that sounds familiar, check the old iMessage registration.

Did You Change Messaging Apps on Android?

RCS can also complicate device changes.

Google advises checking RCS settings when users change messaging apps or experience messaging problems after switching setups.

Again, don’t treat every missing message as a mobile-network outage.

Sometimes the phone is routing modern messages differently from plain SMS.

Check the Default Messaging App

Android phones can have multiple messaging apps installed.

Make sure the correct app is selected as the default.

Google includes this in its official Messages troubleshooting steps.

Otherwise you may be checking one app while incoming messages are being handled somewhere else.

Check Your Dual-SIM Setup

Two SIMs create two identities.

Confirm:

• the affected SIM is enabled
• the number is correct
• messages are associated with the right line
• you have not temporarily switched the line off

On iPhone, Apple recommends checking that the desired cellular line is enabled when troubleshooting messages on multi-SIM devices.

If the SIM is inactive, calls to a different line can make the phone look generally healthy even though the number you expect to receive texts on is not available.

Recently Ported Your Number?

This is another strong clue.

A number port requires:

• voice routing
• SMS routing
• network records

to follow your number to the new provider.

Sometimes one service appears healthy while another behaves oddly.

For example:

Calls work.

Data works.

Some SMS does not.

If the issue began immediately after switching provider while keeping your number, contact the provider and say:

“Incoming SMS is failing after my number transfer, while calls work.”

That is much more useful than:

“Texts are weird.”

Recently Replaced Your SIM?

A replacement SIM must be correctly linked to the existing mobile number.

Until that process completes, services can behave unpredictably.

Talk Home Mobile’s current replacement process specifically instructs customers receiving a replacement SIM to contact customer service so the SIM replacement can be completed.

That means customers should not treat a replacement SIM exactly like a brand-new line.

If SMS problems started after a replacement, confirm that the SIM swap was completed correctly.

Check Whether the Problem Is Only OTPs

If messages from friends arrive but bank codes do not, you do not have a general SMS outage.

Look at:

• short-code filtering
• sender blocking
• registered account number
• service-side delays
• recent SIM/number changes

Ofcom notes that people with poor indoor mobile connectivity can struggle to receive security SMS used during online transactions.

But if personal SMS arrives instantly, signal becomes a weaker explanation.

Check Your Phone’s Date and Time

This is less common for plain SMS than internet messaging, but badly incorrect time settings can make message threads look strange.

Use automatic network date/time unless you have a reason not to.

A new message might appear lower in a conversation because the device thinks it arrived hours earlier.

The text arrived.

You just didn’t see it where expected.

What About Storage?

Old phones could genuinely fill their SMS storage.

Modern smartphones are less likely to fail this way, but a device with critically low storage can still behave badly.

If your phone is completely full:

• clear unnecessary files
• restart
• update the messaging app

Don’t make this the first diagnosis, but don’t ignore a “Storage full” warning either.

Check Software Updates

Operating-system and carrier software updates can contain fixes for:

• cellular connectivity
• messaging
• carrier profiles
• SIM compatibility

Update the device if it is significantly behind.

Then restart.

This becomes particularly relevant after a major network change or phone migration.

Do Not Randomly Change SMSC Settings

Some old troubleshooting guides tell users to manually edit the SMS Centre number.

Avoid doing this unless your provider specifically instructs you.

Entering the wrong value can create new problems.

If the carrier-side SMS configuration is incorrect, let the network provider guide the change.

Do not copy a number from an old forum thread simply because another user mentioned the same handset.

Try the SIM in Another Phone

Excellent diagnostic step.

SMS works in another phone

Original handset/app configuration is likely.

SMS still fails

SIM/account/network becomes more likely.

If you’re testing RCS or iMessage-related behaviour, use plain SMS for the comparison.

What If Only One Person’s SMS Is Missing?

Check:

• blocked list
• their number
• country code
• old conversation thread
• whether they are using iMessage/RCS
• whether they recently changed devices

Ask them to send a plain SMS rather than an internet message.

You may discover their phone is trying to use a different messaging service entirely.

A Real-Life Example

Owen moves from iPhone to Android.

Most messages arrive.

His mum says every text she sends disappears.

Calls between them work perfectly.

The network looks fine.

Then Owen realises her iPhone still believes his number is registered for iMessage.

He fixes the old registration.

Normal messaging returns.

The problem was never voice reception.

It wasn’t the mast.

It was the messaging layer sitting on top.

Talk Home Mobile Customers

If your Talk Home Mobile calls work but incoming SMS does not:

1. test a plain SMS from another network
2. restart the phone
3. check blocked/spam folders
4. check the correct SIM
5. consider recent number porting
6. consider any recent replacement SIM
7. test another handset
8. contact support if plain SMS still fails

Talk Home’s broader network offering includes VoLTE and Wi-Fi Calling on compatible devices, but SMS is still worth diagnosing separately rather than assuming working calls prove every messaging service is configured correctly.

Why Calls Working Is Still Helpful

It tells you several things.

Your SIM is probably:

• physically recognised
• registered to some degree
• able to use voice
• not completely disconnected

That removes several possibilities.

Now focus on messaging.

Good troubleshooting is about reducing the size of the problem until only a few causes remain.

SMS Still Matters More Than People Think

It may feel old compared with WhatsApp or RCS.

But SMS still carries:

• verification codes
• banking alerts
• appointment reminders
• delivery updates
• account notifications
• emergency information

So a phone with working voice but broken SMS is not “basically fine.”

It is missing an important part of mobile service.