The present invention discloses methods and systems for configuring a Radio Frequency (RF) module by a wireless communication apparatus. An international mobile subscriber identity (IMSI) is retrieved from a subscriber identity module (SIM) card, and a configuration information is identified according to the IMSI. The configuration information is then sent to the RF module, and the RF module is configured with the configuration information. The RF module may be housed in the wireless communication apparatus or in an external device, where the wireless communication apparatus is capable of connecting to the external device. The SIM card can be placed in the wireless communication apparatus or in the external device. In one variant, the configuration information is sent to the RF module only when the current configuration of the RF module needs to be changed.