Apps crash instantly on iPhone after they are opened

real_jc2019 Said:

"Hi! My phone is unstable: Here are the stuff for proof [...]There may be other errors. Is this a glitch? Is my phone bricked?"

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Troubleshooting a Failing iPhone:

What to try...

A. Clear "Other":

Clear the storage named "Other". It basically contains unnecessary files such as caches that are used for system ease of use - all of which gather over time: How to Clear "Other" in your iPhone's Storage - Use Backup - User Tips. Caches would be being used for remembrance of application use.

If of no success...

B. Reset to Factory Settings:

One thing to consider is to restore the iPhone to factory settings. Use of this Link: Restore your iPhone, iPad, or iPod to Factory Settings - Apple Support. Important - back up first, as mentioned in that link.

Important:

On the iPhone Both Before and After the Reset:

Enable different iCloud settings(i.e. Contactsand Photos) on your iPhone, so that they are restorable, after the reset...

1. Go to: Settings
2. Tap: Your Name (Top Item)
3. Tap: iCloud
4. Tap: Contacts [and/or other settings] (so that it is green in-color)

real_jc2019 wrote: "It fixes easily if I make the phone go over 80%.

new glitch: All my apps lost access to the photos, camera, microphone, maybe other etc"

real_jc ~ That confirms what I wrote before about the battery being borderline unhealthy. The next stage you can expect is that, when you turn on your iPhone 8 Plus, its weak, original battery won't provide sufficient power to go beyond the Apple logo. And the stage after that is just a black screen. Also, you won't be able to back it up before having the battery replaced:

iPhone Battery & Power Repair

About genuine iPhone batteries

Repair Provider Verification

(Articles found by searching Apple's Knowledge Base.)

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real_jc2019 Said:

"Hi! My phone is unstable: It occurred, again."

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Get this Serviced:

Sounds like all the basics were tried here. So, see about getting this serviced.

A. Set Up a Genius Bar Appointment:

Set up a Genius Bar Appointment (GBA) at your local Apple Store.

1. Go here: Genius Bar Reservation and Apple Support Options - Apple
2. Scroll Down: to the Bottom of the page
3. Click: the Get hardware help button
4. Proceed from there as necessary.

or...

B. Take to 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 iPhone.

or...

C. Take to a Retailer:

Contact your local retailer, seeing if they service iPhones.

As you said your phone has a cracked back, it has hardware problems. There’s no point in reporting new examples of its problems. Your only option is to arrange for a repair, which for that model means a replacement at a discounted price for the same model if you still want an 8 Plus. But that model is kind of long in the tooth; you should consider a current model.

Get a new phone.

Hey there,

You seem to be having a lot of problems in your iPhone , what is the software version is running now on your iPhone?

you can find that by going to Settings > General > about > software version.

is your iPhone storage full?

See ☞ How to check the storage on your iPhone, iPad, and iPod touch - Apple Support

real_jc2019 wrote: "80%"

A Maximum Capacity of 80% is borderline unhealthy and is to be expected in an iPhone 8 Plus. Have the aging battery replaced and your iPhone will be stable again:

iPhone Battery & Power Repair

About genuine iPhone batteries

Repair Provider Verification

(Articles found by searching Apple's Knowledge Base.)

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real_jc2019 wrote: "If the problems or alternate ones go back on, I will status them here."

No, please don't status them here. Instead of wasting people's time, do what you've been previously advised: "Have the aging battery replaced and your iPhone will be stable again".

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real_jc ~ Does your iPhone 8 Plus still have its original battery?

And what's the Maximum Capacity % here?...

Settings > Battery > Battery Health

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Although you should have it serviced, it's so old and cracked (internal damage), it's better to simply purchase a new iPhone instead of the endless unexpected issues that you have been experiencing.

My recommendation:

Shop one-on-one with a Specialist at an Apple Store.

Click ▶︎ Reserve a Shopping Session. 🛒