iPhone 7 Plus shuts down unexpectedly and battery decreases

Onyenna Said:

"My iPhone7plus always shortdown unexpectedly and On back and the battery will decrease from it normal percentage: The battery health is 100%,but it’s still shortdown unexpectedly mostly when watching videos"

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Troubleshooting iPhone Power Drain:

Does it die while you are not using it? Or are you making calls, and using its media services, while this is happening. All seems fine, if you are using this non-stop, on a continual basis.

Links On 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

Onyenna Said:

"My iPhone7plus always shortdown unexpectedly and On back and the battery will decrease from it normal percentage: I noticed that the battery is swallowing up but the the battery health is still on 100%"

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What do you mean "swallowing up"?

A Corroding Battery?:

If you mean that this is enhancing in side, phicially, then it is corroding. You should see about getting this replaced. Let it sit aside, as it is a health hazard.

To Get this iPad Serviced...

Contact Apple, and setup a Genius Bar Appointment or see an AASP (Apple Authorized Service Provider) in your local area. Be careful as to where you get this item, ask you may get an error of an unofficial screen. So, to avoid this continual message, it is best to have Apple replace a screen.

Contact Apple:

• Contact Us - Choose Locations
• Proceed from there as Necessary
• NOTE: Due to the Coronavirus Pandemic, calls are taking a bit linger to get through. And, that makes sense, because many are at home working out-of-the-house or are taking classes over-the-web, this they have more time on their hands to contact Apple Support. So, it might take a bit to get through to Apple Support. But, just stay on the line, and someone will be with you.

Or...

Contact an AASP: 

1. Go Here: Find Locations - Apple Authorized Reseller
2. Click: Service & Support
3. Enter: your location information
4. See: if there is an AASP nearby
5. Contact: an AASP that shows up, and find out more about the services that they offer to fix the iPad

Onyenna Said:

"My iPhone7plus always shortdown unexpectedly and On back and the battery will decrease from it normal percentage"

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View the Battery Health:

Seems you have a failing battery. So, view the Battery Health. Apple recommends you get a new battery, once the Battery Health reaches 80% or lower. When the Battery Health is 80% or lower, it is time for a new battery.

1. Go To: Settings
2. Tap: Battery
3. Tap: Battery Health
4. View: [the percentage]
5. Is it 80% or less?  If so, it is time for a new battery.