Level 1

26 points

SIM card locks overnight after iOS 26 update

After updating my iPhone to iOS 26, I started experiencing a strange issue at night.

When I leave my phone charging overnight, in the morning the SIM card is locked and I have to re-enter the SIM PIN.

It looks like the phone resets the baseband or network module during the night, even though the device itself hasn’t restarted.

This never happened before iOS 26.

I rely on SIM PIN for security, so disabling it is not an option. Please check this bug.

iPhone 14, iOS 26

Posted on Oct 3, 2025 3:43 AM

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37 replies

Nov 6, 2025 8:52 PM in response to LD150

It worked the first night but today the problem is back.

LD150

Level 10

106,174 points

Nov 7, 2025 3:06 AM in response to Plingplong

Plingplong wrote:

It worked the first night but today the problem is back.

It is an intermittent problem anyway, it seems.

Nov 10, 2025 11:34 PM in response to UserL10

yes i am very interested

Nov 30, 2025 1:34 AM in response to farazhr

thank You for your answer « remove SIM card PIN » but this was already said and it is not a fix it is a Workaround.

So I come back to my question “when will a fix released ?”

thank you

Benoit14

Level 1

14 points

Nov 10, 2025 9:54 PM in response to farazhr

I Have the same problem.

Since installing iOS 26.1 on my iPhone 13 Pro Max,

I’ve noticed a recurring issue: every morning, the iPhone asks for the SIM

PIN code, as if it had restarted overnight.

This happens only at night while the device is charging,

with no manual restart or battery drain.

Before updating to iOS 26.1, everything worked normally.

My iPhone uses two lines: one physical SIM and one eSIM.

I have already checked the following:

• Both lines are active and properly configured.

• The iPhone does not restart on its own.

• The SIM cards work normally during the day.

After checking on Apple’s forums and other tech sites, it

seems that several users are experiencing the same issue since iOS 26.0 /

26.1, likely related to the modem or to deep sleep management.

Dec 16, 2025 12:53 AM in response to farazhr

Same active sim active same active same active

Dec 16, 2025 12:54 AM in response to farazhr

BIU

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SIM card locks overnight after iOS 26 update