Phone keeps restarting and only works while charging

One day my phone started dying at 30-20% , then it kept restarting at 70% and when its back on it turns to 10% and everytime i unlock it only 10 seconds it shuts off, updated to iOS 26, my storage is fine, went to get it fixed and when the worker scanned it they said it had no problem and so did my phone say so “no known issues”, should i get my battery replaced?

iPhone 14 Pro, iOS 26

Posted on Oct 24, 2025 1:27 AM

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Question marked as Top-ranking reply

Posted on Oct 24, 2025 3:34 AM

It sounds like your battery has reached the end of its life.


Batteries degrade over time with usage due to chemical aging.

You can expect about a 1% drop per 50 charging cycles (25 charging cycles for IPhone 14 and older) with average use on an iPhone. This is an approximation, that is why it may be plus or minus a few percent on a month to month basis.

Apple recommends replacing it when it reaches 80%. To check your battery health, go to Settings > Battery > Battery Health.


iPhone Battery Replacement.

iPhone Battery Replacement - Apple Support


About Lithium Ion Batteries

iPhone battery and performance - Apple Support (IN)


1 reply
Question marked as Top-ranking reply

Oct 24, 2025 3:34 AM in response to cadi777

It sounds like your battery has reached the end of its life.


Batteries degrade over time with usage due to chemical aging.

You can expect about a 1% drop per 50 charging cycles (25 charging cycles for IPhone 14 and older) with average use on an iPhone. This is an approximation, that is why it may be plus or minus a few percent on a month to month basis.

Apple recommends replacing it when it reaches 80%. To check your battery health, go to Settings > Battery > Battery Health.


iPhone Battery Replacement.

iPhone Battery Replacement - Apple Support


About Lithium Ion Batteries

iPhone battery and performance - Apple Support (IN)


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Phone keeps restarting and only works while charging

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