Why are 4G calls disabled on O2? How to fix strange alert on iPhone

Over the past few years, numerous O2 customers have reported a strange warning appearing on their iPhone, telling them that 4G calling has been disabled.

But it leaves customers new to the pop-up baffled.

Why has O2 disabled my 4G calls?

If you’ve had a notification that says “4G Call Disabled” (as pictured above), you’re not alone.

The strange warning doesn’t exactly go into detail about what or why this happened either.

“O2 has disabled 4G calling on your account,” it simply says.

This can be a bit alarming and leave you wondering if you can still make calls.

This prevents people from making Wi-Fi calls, which is essential in areas with low mobile signal.

However, you can still make calls using your standard network signal.

When the problem arose in 2021, O2 said it was a technical problem.

In 2023, O2 claimed it had something to do with a change in the network.

The company has previously said: “A device performs this check on the network every time it is restarted, and once every 24 hours.

“It is not unusual for a user data update to require a device restart.”

How to Fix O2 has disabled 4G calling

Whatever the cause, fortunately it is easy to solve.

Turning your iPhone on and off should be enough.

To check if everything is OK, go to Institutions Than Mobile data.

Then go to Mobile data optionsThan Voice and datafollowed by Volte.

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