You don't have to buy her an iPhone

If you want to minimize your tech support calls? Come on.

Oh, like when my mother had to spend over a year using her phone only while plugged in because the battery was so underspecced for the task that it literally could not boot the phone despite showing 80% battery, and everything else about her phone basically stopped functioning, and she couldn't buy a new one because they're $1000 and she's an average person without a shitload of money to burn?

Oh wait, that was her iPhone, that she bought because she needed a more modern phone that wouldn't cause her issues like android.

Is there a word for self inflicted schadenfreude? If so, that, I suppose.

There might be a fancy run-on German word, but I would just go with "an average day in my life".