In your minified bootstrap.min.js file, find the substring
"ontouchstart"
and replace it with
"disable-ontouchstart"
Check out this similiar SO question:
Bootstrap Collapsed Menu Links Not Working on Mobile Devices
In your minified bootstrap.min.js file, find the substring
"ontouchstart"
and replace it with
"disable-ontouchstart"
Check out this similiar SO question:
Bootstrap Collapsed Menu Links Not Working on Mobile Devices