Just got a Galaxy S4. I've been using Firefox for years so it was one of the first apps I installed. It is extremely slow and buggy (Crashing). The app is located on the phone itself and not in the SD card. I've cleared the cache, uninstalled and reinstalled Firefox, and continue to have the problems. This happens both on data connection and over wifi. I also have Chrome installed, and the speed is just fine on it. I know, most would say just use Chrome, but I just MUCH prefer Firefox over Chrome. I just don't know what else to do though. Any help would be greatly appreciated. As far as the phone itself, it has MUCH better specs than my last phone, and Firefox ran mostly fine on that. The phone is NOT rooted, and is running the latest firmware.