I don’t believe the O stands for OLED. I’m cynical so wouldn’t be surprised if they use O in the marketing to intentionally mislead customers into believing that it’s an OLED.
It’s not uncommon for me to come across Samsung device owners that believe their device have features it does not. It’s no accident that Samsung has a confusing line up, and why many owners of low end devices end up believing they’ve blagged themselves a bargain for a phone that’s much better than a more expensive iPhone, when that’s rarely the case.
It’s quite predatory towards those who are computer illiterate so I’m not fond of them in general. It’s also why I point blank refuse to offer any tech related support to my Android owning friends and family; because when I tell them they don’t have the phone they think they purchased, or their phone doesn’t have the feature from the more expensive one, they’re suddenly an expert and in Jon Snow.
The worst is when someone downgraded, believing they were upgrading and couldn’t understand why they couldn’t get WhatsApp anymore. I give up on those people. They would be infinitely better off just buying an iPhone and looking after it so they don’t need to
downgrade upgrade every 6 months.