Answer to: How do I fix the sound on my phone?My zte grandma Z787 on and off speakers is extremely low sound volume. This phone normally had the cleaest and loud tone. What can I do? Plus I tried opening it up to take battery out for a few seconds but I can't. Even get the door open last time I end up destroying one just like this and getting new one. So I can't take the back OFF HELP I LOVE THIS PHONE.