I mean, I'm not saying it's pointless, because even of it's to send a message, sanctions are worth it. Sanctions are also clearly destroying the rubble. It's a huge blow to Russia. But until there's a huge blow to PUTIN, not much is going to change. This bitch is never gonna go hungry, never gonna feel cold, never gonna have to budget between a better insurance plan or a bigger place to live. His astronomical savings are untouchable. If these were ever at risk, then itdtbe a blow to him. What's one less yacht?
TL;DR - You have to install a malicious app that pretends to be something else, then the app will try trick you into installing another APK (to which you have to specifically agree), and then your phone gets malware.