Apologies at the $20 difference. I’ve no interest in fact checking you. I’m assuming they’re a high end iPhone that’s gold and cones with extra security and such. But yeah loads of phones have overheating. My OnePlus 9 had horrible over heating. Samsungs gave been prone to it and plenty other ones. Sometimes they explode.
Phones have defects like everything else.
No argument on software side. Apple is great with software. It had lawsuits because it intentionally slows the phone to a crawl though. Samsung and other androids can be unlocked and flashed though.