I also get this problem every so often, same phone as well. Maybe it's an issue with the phone, I have tried factory reset but it didn't make too much of a difference. Yeah S3 mini is a pain in the neck to use.
in chrome & firefox , i cannot display the following website http://e-services.touchngo.com.my/e-Statement/ but i used to able to see this website. now it is just a blank. if i use IE ver 11 or Torch , no problem. is this s browser issue or settings?