Mobile Software and Hardware Solution

if  you  have  a  samsung  galaxy j5 .if  you have  problems  with the  samsung  galaxy  j5/ back  keys  not  working  .what you will be   do  . you know  that it  is  a  hardware  problems  .please  change  back  keys  flex  .but  back  keys  flex  is  good  all of  trak  is  right  then  it  not  working .

hardware  solution  

i  have  some  of  hardware  solution  please  try  it  will  be  100% worked