Battery drain

Saifalibhat Said:

"Battery drain: My i phone xs was having battery health of 99% but after updating to 16.2 it drops 9%"

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Thank you for screenshot.

First off, I see that it is 90% --not 9%

Troubleshooting iPhone Battery Drainage:

Unfortunately, there is no way to determine when nor why the Battery Health decreased.

A. Battery Drain Info:

The iPhone battery will drain, unless it is plugged in and charging. With lots installed, the charge would be slower. As for how fast it would drain the battery, that would depend on the battery health and the volume (sound) you use.

1. Go Here: iPhone Battery and Performance - Apple Support
2. Scroll Down: to "Your battery's maximum capacity"

B.. Troubleshooting the Battery:

• iPhone Battery and Performance - Apple Support

• Charge and Monitor the iPhone Battery - Apple Support

• About the Battery Usage on your iPhone - Apple Support

• About Optimized Battery Charging on your iPhone - Apple Support

• If you see "Your iPhone Battery may Need to be Serviced" - Apple Support

• Use Low Power Mode to Save Battery Life on your iPhone - Apple Support