I think it's ads in free apps. I kept telling my mom to stop installing free apps on Android. She really wanted this one card game. She swears she never clic

I think it's ads in free apps. I kept telling my mom to stop installing free apps on Android. She really wanted this one card game. She swears she never clicked on an ad, but she constantly had malware. I pretty much forced her to go to iOS and she's been happen ever since. She really resisted me, though, and complained for a few months, but now agrees it's better. I switched in Jan 2020. I got so sick of having to upgrade phones every 2 years to get updates. I understand that's changed now (Pixel phones gets updates for 3 or 4 years?), but for more than a decade I bought a new phone every 2 years. I've had the same iPhone (11) since 1/20 and I will keep it for as long as it has updates and/or the battery lasts. So far, it feels like the day I got it.