When I share screenshot through WhatsApp or on Facebook, it loses image quality way more than other mobiles. As I receive screenshots taken by other mobiles, old models or low in quality, they have a very good image result (quality).
I have been told about this method but we don't always share pics like that. or for instance if we want to upload a SS on Facebook, we don't upload it as a document. Anyway, thank you for your help.