You open the app while connected to Wi-Fi.
The logo flashes for a moment.
Then the app shuts down.
No error message appears.
No warning shows on the screen.
You turn off Wi-Fi.
You switch to mobile data.
The same app suddenly opens without any problem.
This pattern is confusing because the app itself is not broken.
The issue only happens when the device is connected to a Wi-Fi network.
In many cases, the app starts background network checks as soon as it launches.
When Wi-Fi is active, those checks happen immediately.
If the network response is blocked, delayed, or malformed, the app can crash before loading the first screen.
Some Wi-Fi networks restrict certain ports or protocols.
Others block background connections without notifying the app.
The app expects a valid response.
Instead, it receives nothing—or something it cannot process.
This causes the app to terminate instantly.
From the user’s perspective, it looks like the app is broken.
In reality, the app fails during its first Wi-Fi-based request.
The crash happens before any interface is shown.
If an app only closes when Wi-Fi is enabled, the problem is not the device.
It’s the network environment the app is trying to communicate with.