Samsung and Apple cameras each outsell all of Sony, Nikon, and Canon cameras combined. No contest. So they know a thing or two about cameras.More megapixels in such a tiny sensor means a crazy amount of noise in anything other than super bright settings. Yes, their software will apply noise reduction, but the likely result is a lacking exposure.
There's a reason that professional full frame sensors generally range from 20-60 megapixels.
For example, these are the megapixels in top-of-the-line professional mirrorless cameras:
Sony A1: 50 mp
Nikon Z9: 46 mp
Canon R3: 24 mp
Especially important to note that those are all full 35mm sensors (35mm x 24mm) versus a phone sensor (roughly 6.2mm x 4.5mm), which is roughly equivalent to 30x more sensor area to absorb light.
These three companies know a lot more about photography than Samsung, this 200 mp sensor is a gimmick.
Obviously, they're not going to be building a phone with a 35 mm sensor, so that's not really a meaningful discussion. The solution has to come from somewhere else. One possibility is that instead of using a camera with a 12 MP sensor, they would use a 48 MP sensor with a similar size, and incorporate pixel binning.
The incorporation of a 48 MP sensor in an iPhone, up from 12 MP, isn't about a megapixel race. It's about trying to improve image quality when there are sensor size restrictions.
The Samsung phone won't have a marginal sensor for a phone. It will be a top end phone camera sensor.And you'll need a 64GB micro SD card per photo. But really, a 12MP camera with a great sensor will take better photos than a 200MP with a marginal sensor.