I do usually this, but recently on older phone (using it temporarily while I buy new) I had to reinstall it and found out, it didn't provide any word suggestions for ant language other than English and even gesture input for other languages didn't work, so at least during initial setup it must have (now?) internet connection most likely to download dictionaries (I thought they used to be included in past, never noticed this before), after allowing the connection, setting up and then disabling the connection, it works fine