1. Method of controlling a keypad input mode for a text message entered on an electronic equipment for wireless communication, the method comprising steps for: determining a language setting for the text message, and setting the keypad input mode to a dictionary-based disambiguation mode relating to the determined language setting, whereby the language setting used at the beginning of the text message corresponds to the language setting used for the last text message entered on the electronic equipment for wireless communication or corresponds to the language determined for a received text message to be replied by the text message, and the language setting is subject to be changed if a match for a predetermined number of text elements entered for the text message is present in a further dictionary-based disambiguation mode related to a different language setting, wherein the language setting used for the text message entered last on the electronic equipment for wireless communication is provided in a data file.