You open the app while using mobile data.
The screen flashes for a split second.
Then the app shuts down.
No error message appears.
No warning shows up.
The app simply disappears.
You switch to Wi-Fi.
You open the app again.
This time, it works normally.
This pattern confuses many users.
It feels random.
But the trigger is the network type.
On mobile data, the app tries to load critical resources immediately.
Those requests may fail, time out, or be blocked.
When that happens, the app exits instead of waiting.
Some apps assume a stable connection at launch.
They don’t handle slower or restricted mobile networks well.
The result looks like a crash.
In reality, the app shuts itself down the moment the connection fails.
If the app only closes on mobile data, the issue is not the device.
It’s how the app reacts to cellular network conditions.