my fund has never disappeared  in my wallet before, as a matter of fact i am still using it uptill date. fund can only disappear in a wallet if it is hacked.

yes android with spyware or malware virus can be used as a tool to get a sensitive information from your android device and prompt to hack. for example if you click on a site that promise to do some airdrop or some promotional offer and you decide to sign in with your wallet by imputing your private key, then you wallet can be hack.

if your device is affected by malware virus online, you don't need to have app for it to work because it has a total control or full access of your phone