Ear speaker

[clubbizz]

Hello, because i have some buzzing problems with the earpiece in some calls (when i talk to someone who's outside,and there is noise) i changed it with a LG G4 earpiece(i didn't find a G FLex 2 one in Bucharest), but it's still the same. They are compatible as dimensions, but can anyone tell me if is it compatible with the power that cames out of it? Or better, is it ok to replace an earpice from a model with another one from other model if it fits?