There is provided a method for determining a handover. The method may comprise: determining, by User Equipment (UE), whether a timer is running, wherein the UE has accessed multiple Radio Access Technologies (RATs); if the timer is not running, performing, by the UE, a handover of a data traffic, which has been routed onto a Wireless LAN (WLAN), to an original RAT; and if the timer is running, not performing, by the UE, the handover of the data traffic, which has been routed onto the WLAN, to the original RAT. The data traffic may be been routed onto the WLAN as a result of Circuit Switched Fall-Back (CSFB) or 3GPP RAT mobility.