iPhone 13 Pro Max randomly shuts down and battery drains to 10% after iOS 26.2.1 update

Hi, I’ve recently updated my iPhone 13 Pro Max to ios 26.2.1 and the phone keeps on switching off randomly and when I turn it on the battery is 10% even if it was 100% when it turned off. What could be the issue? Anyone experiencing this?




[Re-Titled by Moderator]

Original Title: iPhone switch off randomly

iPhone 13 Pro Max, iOS 26

Posted on Feb 7, 2026 9:02 AM

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Question marked as Top-ranking reply

Posted on Feb 7, 2026 10:21 AM

GeveraP wrote:

The battery is at 58%. But this has been a random decline from 80% 3 months ago.

It's no wonder your phone is shutting down. Your battery isn't just degraded, it is SEVERELY degraded. Apple recommends a battery replacement when the health dips to 80%. At 58%, not only are you going to have issues running your iPhone, but your battery may swell and destroy the phone completely. You simply don't have any choice other than to pay Apple about $100 to replace the battery NOW or trade the phone in on a new iPhone.


You can schedule a battery replacement here if you just want to do that --> iPhone Battery Replacement - Apple Support


Personally, I wouldn't plug your iPhone in to charge while you sleep and I would completely power it down when not in use or within your view until you either replace the phone or get the battery replaced. Only charge a phone with such a degraded battery within your sight while you are nearby. And if I'm scaring you - GOOD. This can be more serious than you imagine.

5 replies
Question marked as Top-ranking reply

Feb 7, 2026 10:21 AM in response to GeveraP

GeveraP wrote:

The battery is at 58%. But this has been a random decline from 80% 3 months ago.

It's no wonder your phone is shutting down. Your battery isn't just degraded, it is SEVERELY degraded. Apple recommends a battery replacement when the health dips to 80%. At 58%, not only are you going to have issues running your iPhone, but your battery may swell and destroy the phone completely. You simply don't have any choice other than to pay Apple about $100 to replace the battery NOW or trade the phone in on a new iPhone.


You can schedule a battery replacement here if you just want to do that --> iPhone Battery Replacement - Apple Support


Personally, I wouldn't plug your iPhone in to charge while you sleep and I would completely power it down when not in use or within your view until you either replace the phone or get the battery replaced. Only charge a phone with such a degraded battery within your sight while you are nearby. And if I'm scaring you - GOOD. This can be more serious than you imagine.

Feb 7, 2026 10:19 AM in response to GeveraP

It is nothing short of a miracle that your phone will even power up at all. The battery should have been replaced a long time ago, when it dropped under 80%.


Make an appointment at the Apple Store / Genius Bar or take the phone to an authorized Apple service shop for a battery replacement. You can find a list of authorized shops in your area by clicking on this link:


Find Locations


About $90 (U.S.)




iPhone 13 Pro Max randomly shuts down and battery drains to 10% after iOS 26.2.1 update

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