Please my iPhone 6s is hanging what could be the problem
Please my iPhone is hanging what could be the problem
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If you still have the original battery, most likely it's at the end of its life.
Batteries degrade over time with usage due to chemical aging, that's just how they work.
You can expect about a 1% drop per month 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 Repair & Replacement - Apple Support
About Lithium Ion Batteries
iPhone battery and performance - Apple Support (IN)
Here are some tips on maximizing battery life.
Batteries - Maximizing Performance - Apple