Galaxy J7 during call period 2d call (waiting call) not notify wating tone.

Samsung not make customers fool. Thanks Samsung developers.

Im buy j7 this month 3d after buy this phone im missed every calls and massages . Im not hear phone ringing. Very worst experience first time in samesung. I requested to Samsung team plz salve this issue.

I dont know how to turn on sensor key lights. I think samsung manufacturing team forget to fix sensor lights..Just Kinding but true.