I don't know if Sony devices might have a different keyboard pre-installed. But the usual place to look for this is Settings→Language & Input, look for Keyboards and input methods. Here you should be able to configure your keyboard:
On my ICS device, next to each input method available is a "gear symbol". Tapping that, opens the settings for that input method. The topmost entry is labeled something with "Input Language". Tap that, and you'll find the available languages, again with a "gear symbol" letting you select the keyboard layout.
As all languages in the list have their keyboard layouts announced, you might also simply enable the language with the correct layout there. My list e.g. has:
- English (QWERTY)
- English (AZERTY)
- English (QWERTZ)
So you'ld just need to enable the one you want. You also can enable multiple languages you then can switch between directly from the keyboard, of course.