Man of Honour
As I said you can use the 50 or 200MP modes and save images at those res, but it's largely pointless as you don't get the additional HDR processing for greater dynamic range and stuff.Ah OK, is GSM Arena talking rubbish then? They offer some 50mp sample against the default 12mp ones.
Here's a photo I just took at 50MP (left) vs the pixel binned 12MP version in normal mode (right):
Notice how the 50MP image has detail loss in the highlights? HDR dynamic range is not processed at these resolutions when in normal mode.
The option to choose the mode is here: