[Soulhacker]

Older models of samsung phone should be easier as usually just remove the cover and you can access the battery.

But the newer models of samsung phone ish becoming a pain in the a$$ to self-replace battery, after removed the cover, may still need to remove some cabling connection and even unscrewing before removing some pcs of circuit boards before you can finally access the battery. Some even need to heat up the 4 edges of the cover to expand it first then can remove the cover. It seem the newer the models Samsung ish purposely making it even more difficult and complicated for people to open up the phone.

So best still leave it to the technicians or those that are really familiar with the process.