How do I fix Face ID and battery issues on my iPhone?

"How do I fix Face ID and battery issues on my iPhone?: my face id works afters restart then an hour later stops working including selfie portrait and my battery can be at 70 ,50 ,40% then goes off only to on back with 10% why please is anything wrong?"

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Notes on Troubleshooting Face ID:

Overview these two links:

• If an Alert Says Face ID has been Disabled on your iPhone or iPad Pro - Apple Support
• If Face ID isn't Working on your iPhone or iPad Pro - Apple Support

Troubleshooting iPhone Power:

I. Perform a Restart:

A. Try Force Restarting your iPhone:

Save any information that need be. Then perform the restart.

Go Here: Force Restart iPhone - Apple Support

B. Try Manually Restarting your iPhone:

1. Go To: Settings
2. Select: General
3. Scroll to: the Very Bottom
4. Select: Shut Down
5. Slide Finger: to the Right
6. Wait: 30 Seconds
7. Power One: the iPhone
8. Try this Once More

II. A Few Apple Support Sites that May Help:

• 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

No one here knows what specifically is happening, but here are some examples:

Learn why ⇢ the battery in your iPhone drains too quickly for detailed information.

You have indicated that you are using an iPhone 11 (which is very old) and the battery may need replacing.

iPhone Battery Replacement:



Click Here for current Apple prices.

Your estimated cost: $89.

There is No charge for in-warranty or AppleCare+ plan.

Click ▷ Check AppleCare Coverage.

Click ▶︎ iPhone Battery Replacement.

Good luck! 👋🏼😉

It sounds like your battery may be at 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)

Here are some tips on maximizing battery life.

Batteries - Maximizing Performance - Apple