So that perspective is largely a risk management failure. Yes, it's possible and probably likely, that at some point a rogue cosmic ray might flip a bit on your phone (or a bit in transit between a tower and your phone).

No, it is exceedingly unlikely that such a bit flip will have a real world impact beyond an unexpected error that manifests as an application crash or device reboot in the worst scenario, and most likely a temporary failure such as an image not loading or rendering, or a decryption operation that fails because the flipped bit makes is treated as an error.

Is it something to be concerned about? Generally not - if you are in an environment that has sufficient radiation that it has a practical impact on your phone, one would hope that your actual concern is more heavily focused on protecting your physical self, and one would hope that your personal threat model increases in scope to justify spending on electronics that are more resilient if you have budget left over after buying protective gear.