My mother bought me a phone from South Korea and the default language was Korean. At first, I managed to change it to English but then I accidentally rebooted it. All the apps were gone and I can't change it to English again; whenever I go to the language settings, something in Korean pops up saying "Failed. Please try again." Another problem is, the on screen keyboard no longer exists. I also can't fix it because the settings for the keyboard goes with the language settings. I can't send any SMS except for smileys. What should I do? Please help.