Iphone 7 battery drain

Hello! To check if your battery needs replacing, follow these steps:

 Go to Settings > Battery > Battery Health.

If your Battery Health is under 80%, it is highly reccomended you get it replaced, as this could be the cause of the fast drain of battery.

Hope this helps!

Viona

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 Service - Apple Support

About Lithium Ion Batteries

iPhone battery and performance - Apple Support (IN)