Ringer problem in Samsung Galaxy J3 2016 can be cause of no Ringtones Voice and also no loud speaker calls.if ringer is not working then we can not use loudspeaker and we can not play music.in cause of damage ringer ringtones volume can be low also.For solving Samsung Galaxy J3 2016 Ringer Solution Jumper Problem Ways use daigram below.

If there is any water damge or rust on mother board then clean it with electronic cleaner hot air for a few mint so that it can be dry.

check ringers point after opening the mobile.if ringers point is not working and its value is not right then replace it with new ringer.problem will be solved.if problem will not be solve then check ringers point on board.If there value is not right then check parts and components with there path from above diagram.If some path is missing then apply jumper.If any part and components is not working replace it with new one.