This is a protective measure rather than a malfunction. Often, the solution is as straightforward as checking a cable connection or cleaning a port.
Update iOS to Fix Common Charging Bugs
If the Maximum Capacity is low, replacing the battery is the most effective solution. Protecting your phone from these conditions is vital for long-term battery health.
80% to 100% Charging should function normally. Similarly, check the USB power adapter for cracks or burn marks.
Update iOS to Fix Common Charging Bugs
Inspect the Cable and Adapter Physical damage is the most common reason a charger fails to work. Evaluate Battery Health Over time, lithium-ion batteries degrade and lose the ability to hold a charge.
More About What to do when your iphone won't charge
Looking at What to do when your iphone won't charge from another angle can help expand the discussion and give readers a second clear paragraph under the same section.
More perspective on What to do when your iphone won't charge can make the topic easier to follow by connecting earlier points with a few simple takeaways.