mobile

Hello everyone its a while im dealing with some issue on my galaxy tab s 8.4 LTE version which im kinda sure is not a major serious issue but i thought what the hell maybe someone found the solution for it , the issue is with sound that sometimes only sometimes it goes like choked , its sounds like something is covering the speakers " at first what i did was a Restart which fixed the issue so i was sure its not a hardware issue , for next time i just figured out it can also be fixed just by locking / unlocking the device 2 / 3 times . anyway i wanted to see if anyone else experienced the same issue or not "yes i have factory reset the device "