No sound on my 4U

After I english patched my tamagotchi 4U with the 4U app the sound no longer works. I went to settings and turned it off and back on and have reset it as well. When I reset it it worked for a little while then went back off again. It could just be a side effect of the english patching and I am aware that I accepted the consequences when I did the patch knowing it could potentially cause a problem. However, I am just wondering if anyone has had a similar issue or knows a way to fix it. Thanks!