Fix an installed Android app that isn't working

 

How do I fix the problem on my phone? I keep getting a system UI not responding asking me to wait or close the app. Why is it popping up?
If you are very low on storage, the operating system may malfunction and not work correctly.
Make sure you have enough free storage space, I'd say have at least a minimum of 1.5GB - 2GB of free storage available so the operating system could run better (I'd say at least 2GB to be sure).
You need to have some free space available because the operating system and apps will use temporary storage to operate the software/app (kind of similar to RAM, basically virtual memory/RAM).

It could be software corruption or a system app malfunction. You may want to consider doing a factory reset.

You will need to backup your data and then factory reset. It will erase everything back to factory settings.

Then setup phone again and update the system apps from the Google Play Store.
Open the Google Play Store settings and look at the “About” section to check for updates and then it'll install the update, you may need to connect to WiFi for it to update.
Check to see if all your system apps are updated as well. Usually, a factory reset fixes the problem 50% of the time.

It's also possible your phone hardware is failing and causing the phone to crash with error messages.

This is basically a precursor to a “boot loop”.
This happens when your flash memory chip has gotten worn out and damaged, or possibly even the motherboard as well.
This typically occurs on low and and cheap budget Android phones that cost below $100 USD.
The materials they used to make the phone are cheap, so the lifespan of the hardware is much shorter, probably will last around 5 years before failing (most likely, they used cheap materials when making the motherboard and/or flash memory chip).

This happened to me when I had a cheap $25 Android phone which I used as a music player.
It died around 5 years later after daily usage as a music player, the flash memory chip died out due to cheap quality hardware (started off with error messages and constant hanging and crashing, then it failed to boot up at all).

It is rare for a high end flagship Android phone to die out but it can happen, depending on the situation (if you are a hardcore Android gamer, it's likely the phone's lifespan will be shorter due to more wear and tear on the hardware). Unfortunately, there is no fix other than to replace the entire motherboard along with the flash memory chip on it, but it would likely not even be worth it, depending on the value of the phone you have (Android phones in general don't have high resale value except for the high end flagship Google Pixel and Samsung Galaxy models).


You might be better off just selling the phone for parts (you should mention the problem or people will want a refund), and use the money to buy another used phone of the same model which is cheaper than trying to get it repaired.

Or just get a new phone altogether.
If you are uable to sell it, then hand it over to your cellphone carrier store which usually accepts old and broken phones which they take to recycle (they melt down the battery and phone to extract the metals and reuse it again).