However, it is still frightening to know that some technical glitch might happen since its hardware, can corrupt, can destroy. Ever been in such a situation?
Coins or tokens are not hardware dependent they are private keys dependent so even if you throw your phone into the sea you can still recover all your coins through private keys and passphrases on other devices or wallets.
Your fear is unfounded so stop thinking that, just protect your private keys and you are good.