It's not Samsung that decreases the quality it's WhatsApp and messenger and etc. They do this because WhatsApp and other social media applications use cloud services. if everything is in HD, it will take alot of storage.
bro either the answer is satisfies or not thats up to you but that thing is the reality. go get some knowledge before getting into community mother **bleep**. and why the **bleep** that answer needs to satisfy u who the hell are u
